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Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, Robert R. Mason, V.J. DiFrenna · U.S. Geological Survey

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Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Open-File Report 2023–1084

U.S. Department of the Interior U.S. Geological Survey

Calendar for Report Year 2014 S 1 8 15 22 29

5 12 19 26

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December 2013 T W T 3 4 5 10 11 12 17 18 19 24 25 26 31

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June 2014 T W T 3 4 5 10 11 12 17 18 19 24 25 26

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September 2014 2 3 4 9 10 11 16 17 18 23 24 25 30

March 2014 2 9 16 23 30

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April 2014 1 2 3 8 9 10 15 16 17 22 23 24 29 30

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2 9 16 23 30

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October 2014 4

11 18 25

12 19 26

5 12 19 26

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May 2014 4 11 18 25

S 7 14 21 28

August 2014

February 2014 2 9 16 23

July 2014 2 3 9 10 16 17 23 24 30 31

F 6 13 20 27

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1 8 15 22 29

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Report of the River Master of the Delaware River for the Period December 1, 2013– November 30, 2014 By Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, and Robert R. Mason, Jr.

Open-File Report 2023–1084

U.S. Department of the Interior U.S. Geological Survey

U.S. Geological Survey, Reston, Virginia: 2024

For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment—visit https://www.usgs.gov or call 1–888–392–8545. For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov/ or contact the store at 1–888–275–8747. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Suggested citation: Russell, K.L., Andrews, W.J., DiFrenna, V.J., Norris, J.M., and Mason, R.R., Jr., 2024, Report of the River Master of the Delaware River for the period December 1, 2013–November 30, 2014: U.S. Geological Survey Open-File Report 2023–1084, 98 p., https://doi.org/10.3133/ofr20231084. ISSN 0196-1497 (print) ISSN 2331-1258 (online) ISBN 978-1-4113-4543-0

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Acknowledgments The Office of the Delaware River Master’s (ODRM) daily operation records were prepared from hydrologic data collected daily. Data for these records were collected and computed by the ODRM or provided by the following agencies and utilities. Data for streamflow of the Delaware River at Montague, New Jersey, and other locations and tributaries in this report were provided by the U.S. Geological Survey (USGS); for the Pepacton, Cannonsville, and Neversink Reservoirs by the New York City Department of Environmental Protection (NYCDEP); for Lake Wallenpaupack by the PPL Corporation; and for Rio Reservoir by Eagle Creek Renewable Energy, LLC. Quantitative precipitation forecasts and some precipitation data were provided by the National Weather Service offices, the NYCDEP, and the ODRM. Marie Owens and Margaret Philips of the USGS assisted with and contributed to this report by collecting, organizing, and reviewing data.

Contents Acknowledgments��iii Executive Summary��1 Introduction��1 Method to Determine Directed Releases From New York City Reservoirs��3 Segregating Streamflow Components—Delaware River at Montague, New Jersey��3 Forecasting Streamflow—Delaware River at Montague, New Jersey��3 Hydrologic Conditions��4 Precipitation��4 Reservoir Storage��4 Operations��6 Diversions to New York City Water Supply��6 Diversions by New Jersey��6 Montague Flow Objective��7 Excess Release Quantity and Interim Excess Release Quantity��8 Tailwaters Habitat Protection and Discharge Mitigation Program��8 Comparison of Delaware River Master Operations Data With Other Records��8 Analysis of Forecasts��8 Releases From New York City Reservoirs��9 Delaware River at Montague, New Jersey��10 Conformance of Operations Under the Amended Decree of the Supreme Court of the United States Entered June 7, 1954��10 Quality of Water in the Delaware River Estuary��12 Water-Quality Monitoring Programs��12 U.S. Geological Survey Continuous Water-Quality Monitoring Program��12 Delaware River Estuary Boat Run Monitoring Program��12 Water Quality During the 2014 Report Year��12 Streamflow��12 Water Temperature��12 Specific Conductance and Chloride��14 Dissolved Oxygen��14 Hydrogen-Ion Activity (pH)��15 Tables 1, 3–11, and 13–20��18 References Cited��66 Glossary��62 Appendix 1. Agreement of the Parties to the1954 U.S. Supreme Court Decree Effective June 1, 2014��65

Figures 1 Map showing the Delaware River Basin upstream from Wilmington, Delaware��2 2. Graph showing rule curves and actual contents for New York City reservoirs in the Delaware River Basin, from December 1, 2013, to November 30, 2014��5

3. 4. 5.

6. 7.

Graph showing components of flow, Delaware River at Montague, New Jersey, from August 8 to November 30, 2014��7 Hydrographs of computed and forecasted uncontrolled runoff components, Delaware River at Montague, New Jersey, from August 1 to November 30, 2014��9 Graphs showing New York City-measured mean flow compared with computed mean flow records of U.S. Geological Survey streamgaging site, with both sets of flow data shown in cubic feet per second, downstream from their respective reservoirs��11 Map showing location of Delaware River Basin Commission water-quality monitoring sites on the Delaware River estuary��13 Bar chart showing monthly mean water temperatures in 2014 and long-term mean monthly water temperatures from 1964 to 2014, for the months of April through November in the Delaware River estuary at Benjamin Franklin Bridge, Philadelphia, Pennsylvania��15 Graphs showing the daily mean and minimum daily mean dissolved-oxygen concentrations (in milligrams per liter) averaged from the months of July– September, annually, at two sites on the Delaware River estuary, 1965–2014��16 Graphs showing percent distribution of quarter-hourly dissolved-oxygen concentrations (in milligrams per liter) at two sites on the Delaware River estuary, from July to September 2014��17

Tables 1. 2. 3. 4. 5. 6. 7. 8.

9. 10.

11. 12.

Precipitation in the Delaware River Basin upstream of Montague, New Jersey��18 Elevation and capacities of structures of the Pepacton, Cannonsville, and Neversink Reservoirs��5 Storage in Pepacton Reservoir, New York, for report year ending November 30, 2014��19 Storage in Cannonsville Reservoir, New York, for report year ending November 30, 2014��20 Storage in Neversink Reservoir, New York, for report year ending November 30, 2014��21 Diversions to New York City water-supply system for report year ending November 30, 2014��22 Consumption of water by New York City, from 1950 to 2014��28 Diversions by the State of New Jersey, daily mean discharge, Delaware and Raritan Canal at Port Mercer, New Jersey, for report year ending November 30, 2014��30 New York City reservoir release design data, from December 1, 2013, to November 30, 2014��31 Controlled releases from reservoirs in the upper Delaware River Basin and segregation of flow of Delaware River at Montague, New Jersey, for report year ending November 30, 2014��36 Daily mean discharge, Delaware River at Montague, New Jersey, for report year ending November 30, 2014��51 Cumulative forecasted and actual release volume from Lake Wallenpaupack and Rio Reservoir, and uncontrolled runoff from July 1 to November 1, 2014��8

vii

13. 14. 15. 16. 17. 18. 19.

20.

Daily mean discharge, East Branch Delaware River at Downsville, New York, for report year ending November 30, 2014��52 Daily mean discharge, West Branch Delaware River at Stilesville, New York, for report year ending November 30, 2014��53 Daily mean discharge, Neversink River at Neversink, New York, for report year ending November 30, 2014��54 Daily mean discharge, Delaware River at Trenton, New Jersey, for report year ending November 30, 2014��55 Daily maximum and minimum chloride concentrations, Delaware River at Chester, Pennsylvania, for report year ending November 30, 2014��56 Daily maximum and minimum specific conductance, Delaware River at Reedy Island Jetty, Delaware, for report year ending November 30, 2014��57 Daily mean dissolved-oxygen concentration, Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania, from April 1 to November 30, 2014��58 Daily mean dissolved-oxygen concentration, Delaware River at Chester, Pennsylvania, from April 1 to November 30, 2014��59

Conversion Factors U.S. customary units to International System of Units

Multiply

To obtain

Length inch (in.)

2.54

centimeter (cm)

foot (ft)

0.3048

meter (m)

mile (mi)

1.609

kilometer (km)

square mile (mi2)

2.590

Area square kilometer (km2)

Volume million gallons (Mgal) billion gallons (Ggal) cubic foot per second for a day ([ft3/s]-d) cubic foot per second (ft3/s)

3,785 3.785 2,447

cubic meter (m3) cubic hectometers (hm3) cubic meter per second for a day ([m3/s]-d)

0.02832 cubic meter per second (m3/s) Flow rate

million gallons per day (Mgal/d)

0.04381 cubic meter per second (m3/s)

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as °F = (1.8 × °C) + 32.

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Datums Vertical coordinate information is referenced to the Bureau of Water Supply datum, which was established by the New York City Department of Environmental Protection, Bureau of Water Supply. Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). Elevation, as used in this report, refers to distance above the vertical datum.

Supplemental Information Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (µS/cm at 25 °C). Concentrations of chemical constituents in water are given in milligrams per liter (mg/L).

River Master Letter of Transmittal and Special Report Office of the Delaware River Master U.S. Geological Survey 415 National Center Reston, VA 20192 January 3, 2024 The Honorable John G. Roberts, Jr. Chief Justice of the United States The Honorable John Carney Governor of Delaware The Honorable Phil Murphy Governor of New Jersey The Honorable Kathy Hochul Governor of New York The Honorable Josh Shapiro Governor of Pennsylvania The Honorable Eric Adams Mayor of the City of New York No. 5, Original—October Term, 1950 State of New Jersey, Complainant, v. State of New York and City of New York, Defendants, Commonwealth of Pennsylvania and State of Delaware, Intervenors.

To the Chief Justice of the United States: For the record, and in compliance with the provisions of the Amended Decree of the Supreme Court of the United States entered June 7, 1954, I hereby transmit the 61st Annual Report of the River Master of the Delaware River for the 12-month period from December 1, 2013, to November 30, 2014. In this report, this period is referred to as the River Master “report year.” During the 2014 report year, monthly precipitation in the upper Delaware River Basin ranged from 33 percent of the long-term average in September 2014 to 137 percent of the long-term average in October 2014. Precipitation from December to May, when reservoirs typically refill, was 20.16 inches. Precipitation was below normal in January, March, April, August, September, and November, and above normal in the other 6 months. When the report year began on December 1, 2013, combined useable storage in the New York City reservoirs in the upper Delaware River Basin was 200.133 billion gallons or 73.9 percent of combined storage capacity. The combined usable storage was 154.547 billion gallons at the end of the report year on November 30, 2014. During the report year, operations in the basin were conducted as stipulated by the Decree and the Flexible Flow Management Program (FFMP). On January 23, 2014, the Delaware River Master Advisory Committee (Advisory Committee) met at the Delaware River Basin Commission (DRBC) offices in West Trenton, New Jersey, to discuss the status and structure of the next FFMP agreement. During the report year, the following individuals served as members of the Advisory Committee: Decree Party affiliation

Committee member

Delaware

David Wunsch

New Jersey

Michele Siekerka

New York

Mark Klotz

New York City

Paul Rush

Pennsylvania

Kelly Heffner

During the report year, the River Master and staff participated in many water-supply-related meetings of the DRBC. The Deputy Delaware River Master met periodically with representatives of the Decree Parties as a member of the Decree Parties Work Group and the DRBC’s Regulated Flow Advisory Committee. In addition to management of reservoir releases and streamflow in the upper Delaware River Basin, an issue of particular interest to the River Master was the impending expiration of the current FFMP on June 1, 2014. River Master operations were executed through the U.S. Geological Survey (USGS) Office of the Delaware River Master (ODRM) at Milford, Pennsylvania. Marie Hynes, Deputy Delaware River Master, remained in charge of the office, assisted by hydrologists Arthur Lilienthal and Gary N. Paulachok. During the report year, the ODRM continued the weekly distribution of a summary hydrologic report. These reports contain provisional data on precipitation in the upper Delaware River Basin, releases and spills from New York City reservoirs to the Delaware River, diversions to the New York City water-supply system, reservoir contents, the daily segregation of flow of the Delaware River at the USGS streamgage at Montague, New Jersey (USGS site number 01438500), and diversions by the State of New Jersey. The reports were distributed to members of the Advisory Committee and other parties interested in Delaware River operations. A monthly summary of hydrologic conditions was also provided to Advisory

Committee members. The weekly and monthly hydrologic reports are available through the ODRM website (https://webapps.usgs.gov/odrm/data/data.html). This report documents Delaware River operations during the report year. During the year, New York City diverted 198.447 billion gallons from the Delaware River Basin and released 170.037 billion gallons from Pepacton, Cannonsville, and Neversink Reservoirs to the Delaware River for conservation purposes. A total of 33.159 billion gallons was spilled from the Pepacton, Cannonsville, and Neversink Reservoirs. The River Master directed releases from these reservoirs to the Delaware River that totaled 51.889 billion gallons. This report also describes water quality at various monitoring sites on the Delaware River estuary and includes basic data on the chemical properties and physical characteristics of the water and presents summary statistics. Throughout the year, diversions to New York City’s water-supply system and releases designed to maintain the flow of the Delaware River at Montague were made as directed by the ODRM. Diversions by New York City from its reservoirs in the Delaware River Basin did not exceed the limit stipulated by the Decree. Diversions by the State of New Jersey were also within stipulated limits. The River Master and staff are grateful for the continued cooperation and support of the Decree Parties. Also, the contributions of the PPL Corporation and Eagle Creek Renewable Energy, LLC, in informing the ODRM of plans for power generation and furnishing data on reservoir releases and elevations are greatly appreciated. Sincerely yours, /Signed/ Kendra Russell, P. E. Delaware River Master

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Abbreviations CSO

Conditional Storage Objective

CSSO

Conditional Seasonal Storage Objective

Del. Delaware DRBC

Delaware River Basin Commission

FFMP

Flexible Flow Management Program

ft foot ft3/s

cubic foot per second

(ft3/s)-d

cubic foot per second for a day

IERQ

Interim Excess Release Quantity

in. inch Mgal

million gallons

mg/L

milligram per liter

mi mile mi2

square mile

N.J.

New Jersey

N.Y.

New York

NYCDEP

New York City Department of Environmental Protection

NWIS

National Water Information System [database]

ODRM

Office of the Delaware River Master

OST

Operational Support Tool

Pa. Pennsylvania USGS

U.S. Geological Survey

µS/cm at 25 °C

microsiemens per centimeter at 25 degrees Celsius

Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 By Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, and Robert R. Mason, Jr.

Executive Summary

Introduction

A Decree of the Supreme Court of the United States, entered June 7, 1954 (New Jersey v. New York, 347 U.S. 995), established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes the diversion of water from the Delaware River Basin and requires compensating releases from specific reservoirs owned by New York City to be made under the supervision and direction of the River Master. The Decree stipulates that the River Master provide reports to the Court, not less frequently than annually. This report is the 61st annual report of the River Master of the Delaware River. The report covers the 2014 River Master report year, which is the period from December 1, 2013, to November 30, 2014. During the report year, precipitation in the upper Delaware River Basin was 42.40 inches or 95 percent of the long-term average. On December 1, 2013, combined useable storage in New York’s Pepacton, Cannonsville, and Neversink Reservoirs in the upper Delaware River Basin was 200.133 billion gallons or 73.9 percent of the combined capacity of 270.8 billion gallons. The reservoirs were at about 99.7 percent of usable capacity on May 31, 2014. Combined storage in the Pepacton, Cannonsville, and Neversink Reservoirs decreased below 80 percent of combined capacity in late August. The lowest combined storage was 151.730 billion gallons or 56 percent of combined capacity on November 24, 2014. Delaware River Master operations during the year were conducted as stipulated by the Decree and the Flexible Flow Management Program. Diversions from the Delaware River Basin by New York City and the State of New Jersey fully complied with the Decree. Reservoir releases were made as directed by the River Master at rates designed to meet the flow objective for the Delaware River at Montague, New Jersey, on 94 days during the report year. Interim Excess Release Quantity and conservation releases, designed to relieve thermal stress and protect the fishery and aquatic habitat in the tailwaters of the reservoirs, were also made during the report year. Water quality in the Delaware River estuary between streamgages at Trenton, New Jersey, and Reedy Island Jetty, Delaware, was monitored at several locations. Data on water temperature, specific conductance, dissolved oxygen, and pH were collected continuously by electronic instruments at four locations.

An amended Decree of the Supreme Court of the United States, entered June 7, 1954 (New Jersey v. New York, 347 U.S. 995), which superseded a 1931 Decree, authorizes the diversion of water from the Delaware River Basin and provides for releases of water from three New York City reservoirs— Pepacton, Cannonsville, and Neversink—to the upper Delaware River (https://webapps.usgs.gov/odrm/about/decree). The Decree stipulates that these diversions and releases be made under the supervision and direction of the Office of the Delaware River Master (ODRM). The Decree also stipulates that reports on Delaware River operations be made to the Court no less frequently than annually. The reports can be accessed at https://webapps.usgs.gov/odrm/publications/publications. This report documents operations from December 1, 2013, to November 30, 2014, or the 2014 River Master report year, hereafter referred to as the “report year.” This report also presents information on water quality in the Delaware River estuary during the report year. Since 2007, the Decree Parties (Delaware, New Jersey, New York, New York City, and Pennsylvania) have unanimously approved a series of Flexible Flow Management Program (FFMP) agreements (available at https://webapps.usgs.gov/odrm/ffmp/flexible-flow-management- program) to manage the shared waters of the Delaware River Basin. On December 10, 2008, the Decree Parties signed an FFMP to guide the operations of the ODRM (Russell and others, 2019). The Agreement was in effect until May 31, 2011. A 1-year FFMP Agreement that became effective on June 1, 2014 (appendix 1; also available at https://webapps.usgs.gov/odrm/documents/ffmp/ FFMP_2014_Agreement.pdf), is an extension of the June 1, 2011, Agreement (DiFrenna and others, 2020) and incorporates the changes of the 2012 and 2013 Agreements. The June 1, 2011, Agreement changed the term Conditional Storage Objective (CSO) to Conditional Seasonal Storage Objective (CSSO). Some hydrologic data presented in this report are streamflow and water quality records for U.S. Geological Survey (USGS) data-collection sites. The USGS collected and computed these records in cooperation with the States of New York and New Jersey, the Commonwealth of Pennsylvania, and the City of New York. The locations of major streams and reservoirs, and selected USGS streamgages in the Delaware River Basin, are shown in figure 1.

2 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 76° Map area

75°

Delaware Bay

EXPLANATION Delaware River Basin boundary

Roundout Reservoir Dela

Neversink

Tusten Hawley Shohola

Lake Wallenpaupack

Key gaging station

war

q u ed uct

Mongaup Reservoir Rio Reservoir Port Jervis

Milford

Montague #

Francis E. Walter Reservoir

City

Neversink Tunnel

Callicoon

Equinunk

General Edgar Jadwin Reservoir Prompton Reservoir Lackawaxen River

Index gaging station

East Delaware Tunnel

River

42°

Beaver Kill

Downsville # West De laware Tunne l Deposit # Stilesville Cooks Neversink Falls Reservoir

ATLANTIC OCEAN

NEW YORK

Pepacton Reservoir

Hudson

East Branch Delaware River

West Branch Delaware River Cannonsville Reservoir

MA NY

74°

Lake Hopatcong Beltzville Lake Leh i

Merrill Creek Delaware and Raritan canal Reservoir

r ve Ri

41°

NEW JERSEY

PENNSYLVANIA

# Kingston # Port Mercer

Blue Marsh Lake

Trenton #

Schuylkill R ive r

r ive

aw a

Trenton

Bra n

Philadelphia

wi n

ek re

Wilmington 40°

MARYLAND Base from U.S. Geological Survey digital data, 1:1,000,000 Albers Equal-Area Conic projection North American Datum of 1983

DELAWARE 0 0

10 10

20 MILES 20 KILOMETERS

Figure 1. Map showing the Delaware River Basin upstream from Wilmington, Delaware. The Delaware River Basin boundary is shown along with key and index gaging stations; refer to the “Glossary” section for definitions.

Method to Determine Directed Releases From New York City Reservoirs 3

Method to Determine Directed Releases From New York City Reservoirs The data and computations of the streamflow components form the operational record used by the ODRM to carry out specific responsibilities related to the “Montague flow objective” (appendix 1). The operational record has two parts: (1) segregating the streamflow components of the current daily mean discharge at the USGS streamgage at Montague, New Jersey (N.J.) (USGS site number 01438500), to compute the uncontrolled runoff and (2) forecasting the uncontrolled runoff and using forecasted information from other sources to predict the flow at the Montague site with adequate advance time to direct releases. The forecasting process is used to determine whether the ODRM directs New York City reservoirs to release water to maintain the minimum Montague flow objective at the Montague site, which is defined in table 1 of appendix 1.

Segregating Streamflow Components— Delaware River at Montague, New Jersey The segregation of streamflow at the Montague site involves determining the components of flow, including releases from New York City reservoirs, releases from Lake Wallenpaupack in Pennsylvania and Rio Reservoir in New York for generation of hydroelectric power, and uncontrolled runoff. For the segregation of components of daily mean flow at the Montague site, the following data are used: 1. controlled releases from the Pepacton, Cannonsville, and Neversink Reservoirs of New York City; 2. controlled releases from Lake Wallenpaupack on Wallenpaupack Creek to produce hydroelectric power; and 3. controlled releases from the Rio Reservoir on the Mongaup River to produce hydroelectric power. To determine the contributions of each of these releases, the amount of time for water to travel from the release point to the Montague site is required. The various traveltimes are used to determine the appropriate time-delayed flow contributions from the above sources. The time-adjusted controlled flows of the sources are subtracted from the total streamflow measured at the Montague site to determine the uncontrolled runoff (including reservoir spills and groundwater) from the drainage area upstream from the Montague site. Traveltimes were computed from reservoir- and powerplant-operations data and historical streamflow records. The traveltimes are generally adequate for ODRM operations. Occasionally, however, significant exceptions are observed. For example, during a large increase in a directed release from Cannonsville Reservoir, the arrival time of the water at the

Montague site can be delayed as long as 1.5 days because a substantial amount of water must first fill the channel before a steady flow arrives at the Montague site. During winter, ice formation and lower streamflow gradually increase the resistance to water flow, resulting in increased traveltimes. No adjustments were made to compensate for increased traveltimes during these periods of the report year. The following list gives the average times for the effective travel of water from the various sources of controlled supply to the Montague site. These traveltimes, in hours, were used for flow routing during the 2014 report year: Pepacton Reservoir, 60; Cannonsville Reservoir, 48; Neversink Reservoir, 33; Lake Wallenpaupack, 16; and Rio Reservoir, 8.

Forecasting Streamflow—Delaware River at Montague, New Jersey The releases from New York City’s reservoirs necessary to meet the Montague flow objective were computed based on the forecasted streamflow at the Montague site, exclusive of releases from New York City’s Delaware River Basin reservoirs. The flow must be forecast 3 days in advance to account for the longest traveltime needed for the flow to reach the Montague site from the Pepacton Reservoir. The electric utilities PPL Corporation and Eagle Creek Renewable Energy, LLC, provided daily forecasts of power generation and releases to the Delaware River from Lake Wallenpaupack and Rio Reservoir, respectively, to the ODRM. Because the hydroelectric plants were used mainly for meeting rapidly varying peak-power demands, the forecasts were subject to various modifying factors, including the vagaries of weather on electricity demand. In addition, because the power companies are members of regional transmission organizations, the demand for power outside the local service area can unexpectedly affect generation schedules. Consequently, at times, the actual use of water for power generation differs considerably from the forecasts used in the design of reservoir releases. For computational purposes during periods of low flow, estimates of uncontrolled runoff at the Montague site were treated as two components: (1) current runoff and (2) forecasted runoff from precipitation. An estimate of uncontrolled runoff was computed by using a recession procedure. A recession curve of uncontrolled inputs was developed using the flow at the Montague streamgage and is used to forecast the uncontrolled portion of flow at the Montague site 3 days in advance. Forecasted runoff was determined from data provided by the National Weather Service office in Binghamton, New York (N.Y.), which provided quantitative forecasts of average precipitation and air temperatures for the 3,480-square-mile (mi2) drainage basin upstream from Montague, N.J. During winter, runoff was estimated based on the status of snow and ice, along with forecasted precipitation and temperature. During other periods, forecasted precipitation was used to estimate runoff.

4 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 The forecasted flow at the Montague site, exclusive of releases from New York City’s Delaware River Basin reservoirs, is computed as the sum of forecasted releases from hydroelectric power reservoirs, estimated uncontrolled runoff—including conservation releases from Rio Reservoir— and estimated runoff from predicted rainfall. Each of these inputs is adjusted for traveltime. If the computed total flow is less than the flow objective at the Montague site, the deficiency is made up by releases from New York City’s reservoirs, as directed by the ODRM. Based on the previous day’s provisional data, a balancing adjustment is applied to the following day’s release design. The balancing adjustment is computed as 10 percent of the difference between the cumulative directed release and the cumulative directed release required for exact forecasting and is limited to a maximum of 50 cubic feet per second (ft3/s) magnitude. The balancing adjustment calls for more water to be released when previous directed releases (or a lack of releases) were insufficient to meet the Montague flow objective. The adjustment calls for less water to be released when previous directed releases were higher than required to meet the Montague flow objective. When updated forecasts of precipitation or powerplant releases showed appreciable changes after a release was directed, the release required from New York City’s reservoirs was recomputed based on the updated forecasts. Commonly, this procedure resulted in a reduced release requirement for New York City reservoirs that day. Only final values for releases from New York City reservoirs are presented in this report.

Hydrologic Conditions Precipitation Average precipitation in the Delaware River Basin above Montague, N.J., totaled 42.40 inches (in.) during the 2014 report year, which is 95 percent of the 73-year long-term average (table 1, in back of report). Monthly precipitation ranged from 33 percent of the long-term average in September 2014 to 143 percent of the long-term average in February 2014 (table 1). Precipitation data for the 2014 report year are computed from records for 10 geographically distributed stations operated by the National Weather Service, the New York City Department of Environmental Protection’s (NYCDEP) Bureau of Water Supply, and the ODRM.

The seasonal period from December to May is typically when surface-water and groundwater reservoirs refill. During this period in 2013–2014, total precipitation was 20.16 in., which is about 98 percent of the 73-year long-term average. During the June to November period, total precipitation was 22.24 in., which is 92.6 percent of the 73-year long-term average.

Reservoir Storage Table 2 summarizes the “point of maximum depletion” and other pertinent levels, and the contents of the Pepacton, Cannonsville, and Neversink Reservoirs. The NYCDEP provided this data. Daily storage in the Pepacton, Cannonsville, and Neversink Reservoirs above the point of maximum depletion, or minimum full-operating level, is given in tables 3, 4, and 5 (all in back of report), respectively, and combined storage during the report year is shown in figure 2. Data for these records were provided daily by the NYCDEP, and summary calculations were computed by the ODRM. On December 1, 2013, combined useable storage in the three reservoirs was 200.133 billion gallons, or 73.9 percent of the combined capacity. From December to May, inflow to the New York City reservoirs typically exceeds outflow, consequently increasing storage. Combined storage increased during the report year, and the reservoirs were at about 99.7 percent of usable capacity on May 31, 2014. Combined storage remained high (above 80 percent of combined capacity) until September 2014. The lowest combined storage was 151.730 billion gallons (56 percent) on November 24, 2014 (fig. 2). The three reservoirs spilled a total of 33.159 billion gallons during the year when reservoirs reached maximum capacity. Pepacton Reservoir spilled during the following periods: April 15–23, 2014; May 3–28, 2014; and June 25– July 7, 2014. Cannonsville Reservoir spilled during the following periods: April 15–24, 2014, and May 6–29, 2014. Neversink Reservoir spilled during the following periods: January 13–15, 2014, and July 14–22, 2014. Combined storage reached a maximum for the report year on May 18, 2014, at 277.028 billion gallons. At the end of the report year, the combined storage was 154.547 billion gallons, or 57 percent of the combined capacity, on November 30, 2014.

Hydrologic Conditions 5 Table 2. Elevation and capacities of structures of the Pepacton, Cannonsville, and Neversink Reservoirs. [ft, foot; Mgal, million gallons; NA, not available; —, not applicable]

Pepacton Reservoir Level

Elevation (ft)

Cannonsville Reservoir

Volume (Mgal)

Elevation (ft)

Neversink Reservoir

Volume (Mgal)

Elevation (ft)

Volume (Mgal)

Full pool or spillway crest

1,280

—

1,150

—

1,440

—

Point of maximum depletion

1,152

1140,190

1,040

195,706

1,319

134,941

Sill of diversion tunnel

1,143

23,511

31,035

21,020

1,314

2525

Sill of river outlet tunnel

1,126.50

44,200

1,020.5

41,564

1,314

—

1,800

—

1,680

Dead storage

328

1The quantity stored between full pool or spillway crest and the point of maximum depletion. 2The quantity stored between the point of maximum depletion and the sill of the diversion tunnel. 3The elevation of the mouth of the inlet channel of the diversion works. 4The quantity stored between the sill of the diversion tunnel and the sill of the river outlet tunnel.

300

Full capacity usable storage

Spill mitigation (L1)

Combined reservoir storage, in billion gallons

250

Normal (L2) Drought watch (L3)

200

Drought warning (L4)

150

Actual contents

100

Drought emergency (L5) 50

0 Dec. 1

2013

Jan. 11

Mar. 2

Apr. 21

June 10

July 30

Sept. 18

Nov. 7

2014

Figure 2. Graph showing rule curves and actual contents for New York City reservoirs in the Delaware River Basin, from December 1, 2013, to November 30, 2014. Full capacity usable storage line and the five conservation release rate zones (L1–5) are shown. The conservation release rate zones are defined in the “conservation release” definition in the “Glossary” section.

6 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Operations Operations for December 1, 2013, through November 30, 2014, were conducted as described by the FFMP (revised, effective June 1, 2013, and June 1, 2014). The allowable diversion to New York City was 800 million gallons per day (Mgal/d) throughout the year. The Montague flow objective was 1,750 ft3/s. The allowable diversion to New Jersey was 100 Mgal/d. Conservation releases from New York City reservoirs were made at the rates shown in tables 4a–g of the June 1, 2013, FFMP (DiFrenna and others, 2022) and the June 1, 2014, FFMP (appendix 1), including tables 4f and 4g in December, tables 4e–g in January, tables 4f and 4g in February through March, tables 4d–g in April, tables 4f and 4g in May through October, and table 4g in November 2014 (see “Archived OST Summary Data” from New York City’s Operational Support Tool [OST] at https://webapps.usgs.gov/odrm/data/data.html).

Diversions to New York City Water Supply The 1954 amended Decree authorizes New York City to divert water from the Delaware River Basin at a rate not to exceed the rolling average equivalent of 800 Mgal/d. The Decree specifies that the diversion rate shall be computed as the aggregate total diversion beginning June 1 of each year divided by the total number of days elapsed since the preceding May 31 (appendix 1). Records of daily diversions through New York City’s East Delaware, West Delaware, and Neversink Tunnels (fig. 1) were provided to the ODRM by the NYCDEP. These records were obtained from New York City’s calibrated instruments, which are connected to Venturi meters installed in the tunnel conduits. The measured flows were transmitted electronically on a 15-second interval to New York City computers, and 5-minute interval release and diversion quantities for the preceding 5-minute period were computed using the instantaneous rate-of-flow data from each instrument. These 5-minute quantities were then summed to compute daily total flows, which were reported each day to the ODRM. Each week, the computed diversion values were checked against the flow meter totalizer readings by the NYCDEP and corrected when necessary. Daily diversions during the report year from the Pepacton, Cannonsville, and Neversink Reservoirs to the New York City water-supply system (Rondout Reservoir, N.Y.) are given in table 6 (in back of report). A running account of the average rates of combined diversions from the three reservoirs from June 1, 2013, computed as stipulated by the Decree, is also shown in table 6. A total of 198.447 billion gallons of water was diverted to the New York City watersupply system during the report year with an average of 544 Mgal/d, which is below the maximum diversion rate. The maximum daily diversion from a single reservoir was 515 million gallons (Mgal) on November 1, 2014, from

Pepacton Reservoir. The maximum daily combined diversion from all three reservoirs was 965 Mgal on March 13, 2014. Diversions by New York City did not exceed the limits stipulated by the Decree and the FFMP. Data on water consumption by New York City for each calendar year since 1950, from all sources of supply, are presented in table 7 (in back of report). The East Delaware Tunnel is used to divert water from Pepacton Reservoir to Rondout Reservoir. The hydroelectric powerplant at the downstream end of the East Delaware Tunnel operated most days of the report year. When the powerplant was not in operation, some water leaked through the wicket gates and was not recorded on the totalizer. A current-meter measurement made in 1989 showed that the (assumed constant) rate of leakage is about 12.4 ft3/s (8.0 Mgal/d). Because the powerplant was not in operation for the equivalent of 39 days during the 2014 report year, the estimated quantity of unmeasured leakage (diverted but not recorded) was about 0.3 billion gallons. The West Delaware Tunnel is used to divert water from Cannonsville Reservoir to Rondout Reservoir. When the valves were closed, inspections of the channel below the outlet revealed negligible leakage. A hydroelectric powerplant uses water diverted through the West Delaware Tunnel, but the powerplant only operates when diversions are less than 300 Mgal/d. When the powerplant is not operating, the valves on the pipelines to the plant are closed, and there is no leakage through the system. The Neversink Tunnel is used to divert water from Neversink Reservoir to Rondout Reservoir. A hydroelectric powerplant uses water diverted through the Neversink Tunnel. When the powerplant is not operating and the main valve on the diversion tunnel is open, leakage develops that is not recorded by the Venturi meters. One currentmeter measurement made in 1999 showed a leakage rate of 16.2 ft3/s (10.5 Mgal/d). The leakage is included in the recorded flow when the powerplant is operating. No leakage occurs when the main valve on the tunnel is closed. During the 2014 report year, the powerplant operated part of the day on most days and was not operated for the equivalent of 203 days. About 2.1 billion gallons of water was diverted but not recorded, according to the leakage rate noted above and in records of powerplant operation.

Diversions by New Jersey The Decree authorizes the State of New Jersey to divert water from the Delaware River and its tributaries in New Jersey to areas outside of the Delaware River Basin without compensating releases. Under the FFMP, New Jersey diversions shall not exceed 100 Mgal/d as a monthly average, and the daily mean diversion shall not exceed 120 Mgal/d. When the lower part of the Delaware River Basin is in a drought warning period, diversions shall not exceed 85 Mgal/d as a running average.

Hydrologic Conditions 7 The USGS streamgage on the Delaware and Raritan Canal at Port Mercer, N.J. (USGS site number 01460440; fig. 1), is the official control point for measuring these diversions by New Jersey. Based on data collected by the USGS at this site, the maximum monthly mean diversion was 99.1 Mgal/d during February 2014 (table 8, in back of report). The maximum daily mean diversion was 109 Mgal/d on February 17 and 18, 2014 (table 8). Diversions by New Jersey did not exceed the limits stipulated by the FFMP.

Montague Flow Objective The components of forecasted flow at the Montague site during low flow (forecasted releases from power reservoirs, estimated uncontrolled runoff including conservation releases from Rio Reservoir, and forecasted increases in runoff from precipitation) and the sums of flows exclusive of releases from New York City’s reservoirs are given in table 9 (in back of report). If the computed sum of the components is less than the Montague flow objective, then the deficiency is made up by releases from New York City’s reservoirs, as directed by the ODRM. Table 10 (in back of report) presents the ODRM daily operations record of reservoir releases and segregation of the various components contributing to the flow of the Delaware River, as measured at the Montague site. Based on provisional data and exclusive of water released from the New York City reservoirs, the forecasted flow of the Delaware River at the Montague site was greater than

the flow objective on all days from December 1, 2013, to August 4, 2014. Releases of 51.889 billion gallons were ordered over 94 days for August through November. The observed daily mean discharge at the Montague site was greater than the applicable flow objective (1,750 ft3/s) on all but 19 days during this period (table 11, in back of report). The forecasted flow at the Montague site, exclusive of water released from the New York City reservoirs, was less than the flow objective on 94 days between August 8, 2014, and November 27, 2014, and directed releases were required (table 9). On 19 days between August 18, 2014, and November 26, 2014, the observed flow was less than or equal to the flow objective (table 10). However, 13 observed flows were within 10 percent of the flow objective. On October 6, 2014, the observed flow was 1,430 ft3/s, which is 82 percent of the flow objective (table 11). The components of the total observed flow at the Montague site for August through November 2014 are shown in figure 3. The flow is segregated into the portion derived from the New York City reservoirs, the portion contributed by the power reservoirs, and the uncontrolled runoff from the drainage area below the reservoirs. As described above, the uncontrolled runoff was computed as the residual of observed flow minus releases and was subject to errors in the observations, transit times, and routings of the various flow components. The conservation release from the Rio Reservoir is included in the uncontrolled runoff component. The effect of these uncertainties is incorporated into the computation of uncontrolled runoff.

4,000 EXPLANATION Uncontrolled runoff

3,500

Powerplant reservoirs

Discharge, in cubic feet per second

New York City reservoirs

3,000

2,500

2,000 Montague flow objective

1,500

1,000

500

August

September

2014

October

November

Figure 3. Graph showing components of flow, Delaware River at Montague, New Jersey, from August 8 to November 30, 2014.

8 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Excess Release Quantity and Interim Excess Release Quantity Per section 4c of the 2014 FFMP (appendix 1), the Excess Release Quantity is used in support of the Interim Excess Release Quantity (IERQ). The IERQ is 10.0 billion gallons (15,468 cubic feet per second for a day [(ft3/s)-d]). In 2014, 3.91 billion gallons (6,045 [ft3/s]-d) of the IERQ was incorporated into the release tables to enhance base releases from the New York City Delaware River Basin reservoirs. The IERQ balance of 6.09 billion gallons (9,423 [ft3/s]-d) is reserved and may be used for additional releases to meet the Trenton flow objective or to establish an Extraordinary Needs Bank as described in section 4d of the 2014 FFMP (appendix 1). Per section 4c of the 2014 FFMP, upon request by the “Lower Basin States” or the Delaware River Basin Commission (DRBC), New York City is required to release water in sufficient quantities from the remaining IERQ balance to maintain a flow in the Delaware River at Trenton, N.J. (USGS site number 01463500), of 3,000 ft3/s during basinwide normal conditions from June 15 to March 15 (known as the seasonal period). The maximum amount of water required to be released from the remaining IERQ in any seasonal period is 70 billion gallons. New York City is required to make releases from the IERQ until May 31, 2015, or until the aggregate quantity of the IERQ is exhausted, whichever occurs first. As described in section 4d of the 2014 FFMP (appendix 1), the Decree Parties, the DRBC, and the ODRM may at any time review extraordinary water needs to support such research, aquatic life, or other water-use activity as may be approved by the DRBC. Upon unanimous agreement, the Decree Parties may bank all or a portion of the IERQ remaining in an IERQ Extraordinary Needs Bank to provide for such extraordinary water needs. Banked quantities are deducted from the IERQ, and any unused Extraordinary Needs Bank water is returned to the IERQ. In 2014, 3.129 billion gallons of IERQ water was released from September through November to maintain flows at Trenton, N.J.

Tailwaters Habitat Protection and Discharge Mitigation Program The FFMP established a Tailwaters Habitat Protection and Discharge Mitigation Program, which consists of (1) conservation releases designed for protection of the ecology in the tailwaters below the New York City reservoirs and (2) discharge mitigation releases designed to help mitigate the effects of water spilling from the full Delaware River Basin reservoirs. Controlled releases were made from the New York City Delaware River Basin reservoirs in accordance with the FFMP. From December 1, 2013, to November 30, 2014, 170.037 billion gallons was released

from the New York City Delaware River Basin reservoirs in accordance with the Tailwaters Habitat Protection and Discharge Mitigation Program.

Comparison of Delaware River Master Operations Data With Other Records The ODRM operations are conducted on a daily basis and, by necessity, use preliminary streamflow data. This section compares the records used in ODRM operations with the final data published for selected USGS streamgages. Release data were reported in million gallons per day and converted to cubic feet per second for comparisons.

Analysis of Forecasts Based on anticipated contributions from the components described previously but excluding releases from New York City reservoirs, forecasted streamflow at the Montague site differed from the observed flow on most days. Occasionally, variations in the components were partially compensating, and observed flows compared favorably with forecasted flows. The forecasted flow of the Delaware River at the Montague site, exclusive of releases from the New York City reservoirs, was less than the Montague flow objective on most days for August 5 through October 15, 2014, and for October 28 through November 27, 2014, as indicated by directed releases on 94 days during the report year. Table 12 computes forecasted and actual hydroelectric power releases and uncontrolled runoff from August 1 to November 30, 2014. For August 1 through November 30, 2014, as shown in table 12, actual releases from Lake Wallenpaupack and Rio Reservoir averaged 0.6 and 111 percent more than the forecasted releases, respectively. Powerplant forecasted volumes are calculated from columns 1 and 2 in table 9; powerplant actual releases are calculated from columns 5 and 6 in table 10. The observed runoff (column 10 in table 10) from the uncontrolled area was about 6.0 percent more than the forecasted runoff (columns 3 + 4 in table 9). Table 12. Cumulative forecasted and actual release volume from Lake Wallenpaupack and Rio Reservoir, and uncontrolled runoff from July 1 to November 1, 2014. [(ft3/s)-d, cubic foot per second for a day]

Releases and runoff

Forecasted volume ([ft3/s]-d)

Actual volume ([ft3/s]-d)

Lake Wallenpaupack

12,324

12,401

Rio Reservoir

2,977

6,276

128,261

136,001

Runoff from uncontrolled area

Hydrologic Conditions 9

Releases From New York City Reservoirs

On any given day, forecasted and actual releases from Lake Wallenpaupack and Rio Reservoir can differ considerably. The differences between actual and forecasted daily releases from August 1 to November 30, 2014, are as follows: daily releases at Lake Wallenpaupack varied between 206 (ft3/s)-d less than forecasted releases and 442 (ft3/s)-d greater than forecasted releases, and daily releases at Rio Reservoir differed by 301 (ft3/s)-d less than forecasted releases to 266 (ft3/s)-d greater than forecasted releases. Based on gaged streamflow at the Montague site, total directed releases from New York City reservoirs during the report year (column 9 in table 9) were about 6.6 percent more than required for exact forecasting (column 11 in table 9). A hydrograph comparison of forecasted and computed runoff from the uncontrolled area (fig. 4) indicated that the forecasts were suitable for designing releases from New York City Delaware River Basin reservoirs. Numerical adjustments to the designs were made when needed to compensate for forecast errors. However, because of travel times, the effects of the adjustments on flows at the Montague site were not evident until several days after the design date.

The ODRM operations data on controlled releases from Pepacton, Cannonsville, and Neversink Reservoirs to the Delaware River were provided by the NYCDEP to the ODRM. These data were collected from calibrated instruments connected to Venturi meters installed in the outlet conduits of the reservoirs. The USGS streamgaging site on the East Branch Delaware River at Downsville, N.Y. (site number 01417000), is 0.5 miles (mi) downstream from Downsville Dam (fig. 1). Discharge measured at this site includes releases from Pepacton Reservoir, a small amount of seepage, and any runoff that enters the channel between the dam and the streamgage. The drainage area is 371 mi2 at the dam and 372 mi2 at the streamgage. The streamgage records are rated “good,” which means that about 95 percent of the measured daily mean discharges are within 10 percent of the actual discharge.

8,000

EXPLANATION Computed uncontrolled runoff

7,000

Forecasted uncontrolled runoff

Discharge, in cubic feet per second

6,000

5,000

4,000

3,000

2,000

1,000

August

September

2014

October

November

Figure 4. Hydrographs of computed and forecasted uncontrolled runoff components, Delaware River at Montague, New Jersey (U.S. Geological Survey site number 01460440), from August 1 to November 30, 2014. Discharge is shown in cubic feet per second.

10 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Figure 5A shows the measured flow from Pepacton Reservoir, including spillway, conservation, and directed releases, as reported by the NYCDEP, compared with the records for the USGS streamgage on the East Branch Delaware River at Downsville, N.Y. (table 13, in back of report; USGS, 2019a) from December 1, 2013, to November 30, 2014. The mean difference is 5.3 percent; 95 percent of the daily differences between the streamgage readings and New York City records are within 24 percent. Greater differences rarely occur and can be due to rainfall. Instruments connected to the Venturi meters were recalibrated periodically by the NYCDEP to improve the accuracy of the recorded flow data. The USGS streamgaging site on the West Branch Delaware River at Stilesville, N.Y. (USGS site number 01425000; fig. 1), is 1.4 mi downstream from Cannonsville Dam. Discharge measured at this site includes releases from Cannonsville Reservoir and runoff from 2 mi2 of drainage area between the dam and the streamgage. The drainage area is 454 mi2 at the dam and 456 mi2 at the streamgage. The streamgage records are rated “fair,” which means that about 95 percent of the daily mean discharges are within 15 percent of the actual discharge. The records include runoff from the area between the dam and the streamgage and seepage near the base of the dam. Figure 5B shows the releases from Cannonsville Reservoir (including spillway, conservation, and directed releases), reported by New York City, compared with records for the USGS streamgage on the West Branch Delaware River at Stilesville, N.Y. (table 14, in back of report; USGS, 2019b), from December 1, 2013, to November 30, 2014. The mean difference is 6.5 percent, and 95 percent of the daily differences between the streamgage readings and New York City records are within 17 percent. The most significant differences between the measured flows are primarily at lower flow rates. The USGS streamgaging site on the Neversink River at Neversink, N.Y. (site number 01436000), is 1,650 ft downstream from the Neversink Dam (fig. 1). Discharge measured at this streamgage includes releases from Neversink Reservoir and, during storms, a small amount of runoff that originates between the dam and the streamgage. The drainage area is 92.5 mi2 at the dam and 92.6 mi2 at the streamgage. The streamgage records are rated “good,” which means that about 95 percent of the measured daily mean discharges are within 10 percent of the actual discharge.

Figure 5C shows releases from Neversink Reservoir, including spillway, conservation, and directed releases, reported by New York City, compared with the records for the USGS streamgage on the Neversink River at Neversink, N.Y. (table 15, in back of report; USGS, 2019c), from December 1, 2013, to November 30, 2014. The mean difference between the released flow and measured flow is 6.5 percent, and 95 percent of the daily differences between the streamgage readings and New York City records are within 21.0 percent.

Delaware River at Montague, New Jersey The ODRM’s operations record for the Delaware River at Montague, N.J. (USGS site number 01438500) (table 10), showed 0.6 percent less discharge for the report year than the published USGS record for the streamgage (table 11). Daily values for the two records agreed closely, except during ice-affected periods and the summer vegetation growth season.

Conformance of Operations Under the Amended Decree of the Supreme Court of the United States Entered June 7, 1954 From December 1, 2013, to November 30, 2014, operations of the ODRM were conducted as stipulated by the Decree and the FFMP. Diversions from the Delaware River Basin to the New York City water-supply system did not exceed those authorized by the Decree and the FFMP. New York City released water from its reservoirs at rates directed by the ODRM to meet the applicable flow objective at the Montague site. During the report year, New York City complied fully with all directives and requests of the ODRM. Diversions from the Delaware River Basin by New Jersey were within the limits stipulated by the Decree. New Jersey complied fully with all directives and requests of the ODRM. The IERQ was used in accordance with the FFMP and agreements completed throughout the report year.

Hydrologic Conditions 11 3,000

2,500 2,000

y = 0.9594x + 8.7934 R2 = 0.9741

1,500 1,000 500

New York City-measured mean flow, in cubic feet per second

4,000

500

1,000

1,500

2,000

2,500

3,000

3,500 3,000

y = 0.9444x + 45.218 R2 = 0.9832

2,500 2,000 1,500 1,000 500 0

1,400

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

1,200 1,000 y = 0.9467x + 5.584 R2 = 0.9086

800 600 400 200 0

200

400

600

800

1,000

1,200

1,400

U.S. Geological Survey-computed mean flow, in cubic feet per second

Figure 5. Graphs showing New York City-measured mean flow compared with computed mean flow records of U.S. Geological Survey (USGS) streamgaging sites, with both sets of flow data shown in cubic feet per second, downstream from their respective reservoirs: (A) site number 01417000, East Branch Delaware River at Downsville, New York (N.Y.), downstream from Pepacton Reservoir (data from USGS, 2019a); (B) site number 01425000, West Branch Delaware River at Stilesville N.Y., downstream from Cannonsville Reservoir (data from USGS, 2019b); and (C) site number 01436000, Neversink River at Neversink, N.Y., downstream from Neversink Reservoir (data from USGS, 2019c), for December 1, 2013–November 30, 2014.

12 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Quality of Water in the Delaware River Estuary This section describes water-quality monitoring programs for the Delaware River estuary during the 2014 report year. Selected data are presented, and water-quality conditions are summarized.

estimates of the surface-water quality of the Delaware River estuary and allow for the assessment of compliance with water-quality standards. Sample analysis includes routine and bacterial parameters, nutrients, heavy metals, chlorophyll-a, dissolved silica, and volatile organics. Water-quality data for these DBRC sampling sites are not presented in this report but are accessible from the DRBC Delaware Estuary Water Quality (Boat Run) Explorer (https://johnyagecic.shinyapps.io/ BoatRunExplorer/).

Water-Quality Monitoring Programs

Water Quality During the 2014 Report Year U.S. Geological Survey Continuous Water-Quality Streamflow Monitoring Program As part of a long-term program, in cooperation with the DRBC, the USGS operates continuous water-quality monitoring stations at four locations in the Delaware River estuary between the streamgages at Trenton, N.J., and Reedy Island Jetty, Delaware (Del.) (fig. 6). Continuous water temperature, specific conductance, dissolved oxygen, and pH data were collected at four sites: the Delaware River at Trenton, N.J. (USGS site number 01463500); the Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (Pa.) (USGS site number 01467200); the Delaware River at Chester, Pa. (USGS site number 01477050); and the Delaware River at Reedy Island Jetty, Del. (USGS site number 01482800). Continuous turbidity data were also collected at the Trenton and Reedy Island Jetty sites. The DRBC and others use these data to assess waterquality conditions and track “salt front” movement in the Delaware River estuary. Continuous monitor data are processed and stored in the USGS National Water Information System database (NWIS) (USGS, 2019g) and are available at https://waterdata.usgs.gov/nwis. Selected monitoring data from the 2014 report year are included in this report section. For this report, station number 01467200 is referred to as “Delaware River at Benjamin Franklin Bridge at Philadelphia, PA” because that was the gage name during the report period from December 1, 2013, to November 30, 2014. The gage was moved 150 feet upstream and renamed “Delaware River at Penns Landing, Philadelphia, PA” in January 2020. The updated name is used in the “References Cited” section to refer to the data as listed on NWIS web at the time of publication.

Delaware River Estuary Boat Run Monitoring Program Each year, the DBRC contracts with the Delaware Department of Natural Resources and Environmental Control to collect water samples at 22 sites on the Delaware River estuary (fig. 6, sites A–N, P–W) (DRBC, 2021). Samples are collected monthly from April to October. The goals of this program are to provide accurate, precise, and defensible

Streamflow has a major effect on water quality in the Delaware River estuary. Large freshwater inflows commonly result in improved water quality by limiting the upstream movement of seawater and reducing the concentration of dissolved substances. High inflows also aid in maintaining lower water temperatures during warm weather and support higher concentrations of dissolved oxygen. Under certain conditions, however, high streamflows can transport large quantities of nutrients to the estuary, which can result in excessive algae levels. Streamflow from the Delaware River Basin upstream from the Trenton, N.J., site is the primary source of freshwater inflow to the Delaware River estuary. During the report year, monthly mean streamflow measured at the Delaware River at Trenton, N.J., streamgage (USGS site number 01463500) was highest during May 2014 (24,568 ft3/s; table 16 [in back of report]) and lowest during September 2014 (3,295 ft3/s; table 16). Long-term monthly mean streamflow was computed for October 1912 through November 2013 (USGS, 2019f). Monthly mean streamflows were less than the long-term mean monthly streamflows in December 2013, February and March 2014, and from August through November 2014. The greatest percentage of flow deficiency was in November 2014, when the monthly mean streamflow was 35 percent of the long-term mean monthly flow. The highest daily mean streamflow during the report year was 74,900 ft3/s on May 1, 2014, and the lowest daily mean streamflow was 2,610 ft3/s on October 8, 2014 (table 16).

Water Temperature Water temperature influences water quality by affecting the various physical, chemical, and biological properties of water (USGS, 2020c). Increases in water temperature usually have detrimental effects on water quality by decreasing the saturation level of dissolved oxygen and increasing the biological activity of aquatic organisms. Although the primary factors that affect water temperature in the Delaware River estuary are climatic, various kinds of water use, especially powerplant cooling, can have substantial effects.

Quality of Water in the Delaware River Estuary 13 75°30'

75°00'

wa ela

er Riv

PENNSYLVANIA

C D

h Sc

lki

40°00'

River

G 3

EXPLANATION U.S. Geological Survey continuous monitoring site and identifier

F 1 2

3 4

J K

Delaware River Basin Commission periodic sampling site name and identifier

L M N

39°30'

NEW JERSEY

Trenton Benjamin Franklin Bridge (Philadelphia) Chester Reedy Island Jetty

S DELAWARE T

A B C D E F G H I J K L M N P Q R S T U V W

Biles Channel Florence Bend Burlington-Bristol Bridge Torresdale Betsy Ross Bridge Benjamin Franklin Bridge Navy Yard Paulsboro Eddystone Marcus Hook Oldmans Point Cherry Island New Castle Pea Patch Island Reedy Point Liston Point Smyrna River Ship John Light Mahon River Elbow of Crossledge South of Joe Flogger Shoal South of Brown Shoal

V Delaware Bay 39°00'

0 0

5 5

10 MILES 10 KILOMETERS

Figure 6. Map showing location of Delaware River Basin Commission (DRBC) water-quality monitoring sites on the Delaware River estuary. Modified from DRBC (2021). U.S. Geological Survey streamgaging sites (1–4) and DRBC sampling sites (A–N, P–W) are listed.

14 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Water temperature data for the Benjamin Franklin Bridge site were collected almost continuously from April to November 2014. The procedures used to create figure 7 of this report were started for the 2011 report (DiFrenna and others, 2020). The available long-term mean daily temperature data were retrieved from the NWIS database for April through November; the mean value was computed for each month. Long-term mean water temperatures were computed using data for 1964–2014 (fig. 7). In September and October 2014, the monthly mean temperatures were greater than the long-term mean monthly temperatures (fig. 7). Monthly mean temperatures were less than the respective long-term mean temperatures in April–August and in November 2014 (fig. 7). The maximum daily mean water temperature of 26.4 degrees Celsius was recorded on July 16, 2014 (USGS, 2020d).

Specific Conductance and Chloride Specific conductance is a measure of the capacity of water to conduct electrical current and is a function of the types and quantities of dissolved substances in water (U.S. Environmental Protection Agency, 2016). As concentrations of dissolved ions increase, the specific conductance of the water also increases. Specific conductance measurements are effective indicators of dissolved solids content and total ion concentrations, including chloride. Seawater and some artificial constituents can cause the specific conductance of estuary water to increase substantially. Dilution associated with high freshwater inflows results in decreased levels of dissolved solids and lower specific conductance, whereas low inflows have the opposite effect. The upstream movement of seawater and the accompanying increase in chloride concentrations is a concern for water supplies obtained from the Delaware River estuary (Kauffman and others, 2009). Water with chloride concentrations greater than 250 milligrams per liter (mg/L) is considered undesirable for domestic use, and water with concentrations exceeding 50 mg/L is unsatisfactory for chemically sensitive consumers and some industrial processes. Chloride concentrations in the estuary increase in a downstream direction. The Reedy Island Jetty site measured specific conductance, not chloride concentrations. Chloride concentrations at the Chester site (table 17, in back of report; USGS, 2020f) were measured by Kimberly-Clark Chester Operations. The DRBC provided those data; they are not derived from specific conductance data. The greatest daily maximum specific conductance at the Reedy Island Jetty site was 24,600 microsiemens per centimeter at 25 degrees Celsius (µS/cm at 25 °C) on November 17, 2014 (table 18, in back of report). The daily maximum specific conductance during the report year exceeded 3,780 µS/cm at 25 °C on approximately 96 percent of the 362 days measured during the 2014 report year. The lowest daily minimum specific conductance was 264 µS/cm at 25 °C on May 1 and 2, 2014. The daily minimum specific conductance

exceeded 3,780 µS/cm at 25 °C on 57 percent of the 362 days with measured specific conductance values in the 2014 report year. The greatest daily maximum chloride concentration at the Chester site was 490 mg/L on October 12 and 13, 2014 (table 17). During the report year, daily maximum concentrations exceeded 50 mg/L on about 76 percent of the days. The lowest daily minimum chloride concentration was 35 mg/L on April 23, 2014. Daily minimum concentrations exceeded 50 mg/L on about 59 percent of the days. Chloride concentrations were relatively high from December 1, 2013, to mid-January 2014, from early February to mid-March 2014, in early April 2014, and from mid-August through November 30, 2014 (table 17), when daily minimum concentrations exceeded 50 mg/L on most days.

Dissolved Oxygen Dissolved oxygen in water is necessary for the respiratory processes of aquatic organisms and chemical reactions in aquatic environments (USGS, 2020a). Fish and many other clean-water species consistently require relatively high dissolved-oxygen concentrations. The primary source of dissolved oxygen in the Delaware River estuary is diffusion from the atmosphere and, to a lesser extent, the photosynthetic activity of aquatic plants. The principal factors that affect dissolved-oxygen concentrations in the estuary are water temperature, biochemical oxygen demand, freshwater inflow, phytoplankton, turbidity, salinity, and tidal and wind-driven mixing. The USGS has measured dissolved oxygen concentrations at several sites on the Delaware River estuary since 1961. Two of these sites, the Benjamin Franklin Bridge site and the Chester site, have nearly continuous records and are in the reach of the estuary most affected by effluent discharges, which can lead to reduced dissolved oxygen concentrations because of increasing biological oxygen demand by aerobic bacteria in water. For these sites, the daily mean and minimum daily mean dissolved-oxygen concentrations for the 3-month period of July–September, during the 1965–2014 report years, are shown in figure 8. Although dissolved-oxygen concentrations increased considerably over these 50 years, yearly mean concentrations can vary substantially. Due to technological changes and other factors, the process used to calculate mean dissolved-oxygen concentrations and those data values have changed slightly over time. The procedures used to create figure 8 in this report have been used since the 2009–10 Delaware River Master report (Russell and others, 2019). The available mean and minimum daily dissolved-oxygen concentration data were downloaded from the NWIS database for July, August, and September. The average mean and average minimum dissolved-oxygen concentrations of the daily values were computed over those 3 months for each report year.

Quality of Water in the Delaware River Estuary 15 Dissolved oxygen concentrations in the Delaware River estuary are generally greatest near the Trenton site and decrease in a downstream direction. Concentrations commonly reach minimum levels in an area just downstream from the Benjamin Franklin Bridge. During the report year, the lowest recorded daily mean concentration was 5.1 mg/L on August 15, 17, 18, 20, 21, 24, 25, and September 5 and 8, 2014 (table 19, in back of report; USGS, 2020d). Daily mean dissolved oxygen concentrations were consistently 6.0 mg/L or greater from April 1 to July 14, 2014, and October 5 to November 30, 2014. At the Chester site, the lowest recorded daily mean dissolvedoxygen concentration was 4.9 mg/L on September 2, 4, 6, and 7, 2014 (table 20, in back of report; USGS, 2020e). Histograms of half-hourly dissolved-oxygen concentrations during the critical summer period (July 1–September 30, 2014) at the Benjamin Franklin Bridge and Chester sites are presented in figure 9. During the 2014 critical summer period, half-hourly dissolved-oxygen concentrations were 4.0 mg/L or less for 0 days (0 percent of the time) at the Benjamin Franklin Bridge site and a combined total of 1.1 days (1.2 percent of the time) at the Chester site (USGS, 2020d, e).

Hydrogen-Ion Activity (pH) The pH of a solution is a measure of the effective concentration (activity) of dissolved hydrogen ions. Solutions with a pH less than 7 are acidic, whereas solutions with a pH greater

than 7 are basic or alkaline. The pH of uncontaminated surface water generally ranges from 6.5 to 8.5. Major factors affecting the pH of surface water are the geologic composition of the drainage basin and human inputs, including effluent discharges. In addition, photosynthetic activity and dissolved gases, including carbon dioxide, hydrogen sulfide, and ammonia, considerably affect pH. The pH of water determines the solubility (the amount that can be dissolved in the water) and biological availability (the amount that can be used by aquatic life) of chemical constituents such as nutrients (phosphorus, nitrogen, and carbon) and heavy metals (for example, lead, copper, and cadmium; USGS, 2020b). During the report year, pH was measured seasonally (April–November) at the Benjamin Franklin Bridge and Chester sites and continuously at the Reedy Island Jetty site. During these periods, the ranges of daily median pH measured at these sites are as follows: Benjamin Franklin Bridge, 6.8–7.6; Chester, 6.9–7.4; and Reedy Island Jetty, 7.2–7.8 (USGS, 2020d, e, f). Generally, the pH of water in the Delaware River estuary is lowest near Trenton, N.J., and increases (the water becomes more alkaline) in the downstream direction. The pH of water in the Delaware River estuary between the Benjamin Franklin Bridge and Reedy Island Jetty was not a limiting factor for aquatic health or other beneficial water-uses during the report year.

EXPLANATION Average monthly, 1964–2014 Monthly average, 2014

Water temperature, in degrees Celsius

April

May

June

August

July

September

October

November

2014

Figure 7. Bar chart showing monthly mean water temperatures in 2014 and long-term mean monthly water temperatures from 1964 to 2014, for April–November in the Delaware River estuary at Benjamin Franklin Bridge, Philadelphia, Pennsylvania. Water temperatures are given in degrees Celsius.

16 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

A Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (01467200)

Dissolved-oxygen concentration, in milligrams per liter

EXPLANATION 1

Mean Minimum daily mean

0 7

Delaware River at Chester, Pennsylvania (01477050)

EXPLANATION Mean

Minimum daily mean 0 1965

1970

1975

1980

1985

1990

Year

1995

2000

2005

2010

2015

Figure 8. Graphs showing the daily mean and minimum daily mean dissolved-oxygen concentrations (in milligrams per liter) averaged from the months of July–September, annually, at two sites on the Delaware River estuary, 1965–2014, at (A), Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (Pa.) (U.S. Geological Survey [USGS] site number 01467200) and (B), Delaware River at Chester, Pa. (USGS site number 01477050).

Quality of Water in the Delaware River Estuary 17 A

11.0

Dissolved-oxygen concentration, in milligrams per liter

B Delaware River at Chester, Pennsylvania (01477050)

Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (01467200)

10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 0

35 0

Percent of time

Figure 9. Graphs showing percent distribution of quarter-hourly dissolved-oxygen concentrations (in milligrams per liter) at two sites on the Delaware River estuary, from July to September 2014 for (A), Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (Pa.) (U.S. Geological Survey [USGS] site number 01467200); and (B), Delaware River at Chester, Pa. (USGS site number 01477050).

18 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Tables 1, 3–11, and 13–20 Table 1. Precipitation in the Delaware River Basin upstream of Montague, New Jersey. [Data provided daily from the National Weather Service, the New York City Department of Environmental Protection, and the Office of the Delaware River Master. in., inches; —, not applicable]

December 2013 to November 2014

December 1940 to November 2014 monthly average precipitation (in.)

Precipitation (in.)

Percent of average

Month

Cumulative

December

3.50

3.69

105

0.19

January

3.02

2.75

−0.27

−0.08

February

2.62

3.75

143

1.13

1.05

March

3.40

2.44

−0.96

0.09

April

3.77

2.82

−0.95

−0.86

May

4.19

4.71

112

0.52

−0.34

June

4.21

5.23

124

1.02

0.68

July

4.18

5.52

132

1.34

2.02

August

4.07

2.75

−1.32

0.70

September

4.12

1.36

−2.76

−2.06

October

3.71

5.07

137

1.36

−0.70

November

3.72

2.31

−1.41

−2.11

Total

44.51

42.40

—

Month

Excess or deficit precipitation compared with long-term average (in.)

Tables 1, 3–11, and 13–20 19 Table 3. Storage in Pepacton Reservoir, New York, for report year ending November 30, 2014. [Delaware River Master daily operations record; gage reading at 0800 hours; data provided daily through written communication from New York City Department of Environmental Protection. Storage is given in millions of gallons above the elevation of 1,152.00 feet. Add 7,711 million gallons for total contents above the sill of the outlet tunnel at the elevation of 1,126.50 feet. Storage at the spillway level is 140,190 million gallons. —, not applicable; Mgal/d, million gallons per day; ft3/s, cubic foot per second] Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

104,288

116,763

127,216

120,225

122,756

138,719

139,693

140,468

132,344

118,579

104,192

93,572

104,479

117,064

126,883

119,936

124,153

139,252

139,509

140,209

131,987

118,090

103,704

93,110

104,606

117,283

126,533

119,614

125,539

139,675

139,345

140,116

131,576

117,719

103,215

92,709

104,685

117,400

126,097

119,325

126,831

140,264

139,345

140,431

131,185

117,132

102,727

92,279

104,827

117,602

125,870

119,019

128,146

140,671

139,252

140,653

130,777

116,663

102,383

91,792

105,050

118,293

125,835

118,613

129,430

140,690

139,032

140,523

130,369

116,177

101,945

91,394

105,288

120,684

125,471

118,293

130,475

140,542

138,848

140,264

129,925

115,709

101,492

90,908

105,352

121,591

125,140

117,956

131,363

140,486

138,627

139,822

129,501

115,210

101,086

90,614

105,304

122,275

124,794

117,686

132,219

140,449

138,443

139,509

129,042

114,694

100,683

90,233

105,241

123,050

124,447

117,350

133,096

140,468

138,241

139,124

128,585

114,180

100,234

89,884

105,209

123,876

124,065

117,031

133,815

140,357

138,058

138,645

128,110

113,683

99,784

89,491

105,399

126,516

123,670

116,880

134,750

140,227

137,857

138,076

127,653

113,206

99,351

89,257

105,446

128,146

123,325

116,981

135,421

140,024

137,730

137,601

127,547

112,728

98,936

88,980

105,383

129,183

123,187

116,930

136,073

139,877

138,369

138,040

127,163

112,250

98,491

88,720

105,336

130,334

122,860

116,863

136,763

139,840

138,811

138,388

126,726

111,792

98,061

88,460

105,241

131,043

122,584

116,830

140,301

139,712

139,124

138,829

126,236

111,301

97,908

88,172

105,446

131,737

122,395

116,730

141,580

141,506

139,087

139,068

125,747

110,794

97,709

87,955

105,320

132,200

122,104

116,511

141,709

141,894

138,976

139,105

125,278

110,306

97,725

87,869

105,209

132,487

121,797

116,227

141,468

141,580

138,885

139,087

124,759

109,916

97,740

87,739

105,066

132,505

121,609

116,110

141,209

141,320

138,866

138,682

124,291

109,396

97,725

87,466

105,002

132,361

121,368

116,093

140,968

141,005

138,682

138,205

123,825

108,895

97,298

87,352

106,596

132,200

121,436

116,060

140,634

140,727

138,461

137,730

123,376

108,443

96,825

87,037

108,813

131,773

121,540

115,993

140,431

140,727

138,168

136,981

122,912

107,991

96,400

86,708

110,582

131,434

121,557

115,959

140,153

140,616

137,875

136,690

122,464

107,525

96,295

86,523

111,628

130,830

121,300

115,809

139,785

140,708

137,893

136,091

121,968

107,060

96,053

86,580

112,299

130,387

121,043

116,076

139,455

140,653

141,580

135,475

121,522

106,612

95,720

86,508

112,843

129,855

120,787

115,993

139,124

140,616

141,727

134,877

120,975

106,100

95,373

86,737

113,453

129,306

120,480

115,826

138,958

140,431

141,246

134,426

120,463

105,605

95,040

87,066

114,047

128,743

—

116,194

138,737

140,153

140,857

133,977

120,004

105,145

94,755

87,138

115,426

128,128

—

118,107

138,461

139,914

140,597

133,437

119,512

104,669

94,366

86,980

116,311

127,618

—

121,009

—

139,822

—

132,826

119,019

—

93,976

—

Change1

12,023

10,855

−6,736

15,705

1,103

904

−7,642

−13,325

−13,910

−10,216

−6,592

Equivalent

784

387.8

350.2

−240.6

25.3

523.5

35.6

30.1

−246.5

−429.8

−463.7

−329.5

−219.7

600

542

−372

39.1

810

55.1

46.6

−381

−665

−717

−510

−340

change2 (Mgal/d) Equivalent change3 (ft3/s) 1Change is calculated as the storage on the last day of each month minus the storage on the first day of each month. The net change for the year is –17,047.0 million gallons. Minimum and maximum storage for December through May is 104,288 and 141,894 million gallons, respectively; minimum and maximum storage for June through November are 86,508 and 141,727 million gallons, respectively. 2The net equivalent for the year is –46.7 million gallons per day. 3The net equivalent for the year is –72.2 cubic feet per second.

20 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 4. Storage in Cannonsville Reservoir, New York, for report year ending November 30, 2014. [Delaware River Master daily operations record; gage reading at 0800 hours; data provided daily through written communication from New York City Department of Environmental Protection. Storage is given in millions of gallons above the elevation of 1,040.00 feet. Add 2,584 million gallons for total contents above the sill of the outlet tunnel at the elevation of 1,020.50 feet. Storage at spillway level is 95,706 million gallons. —, not applicable; Mgal/d, million gallons per day; ft3/s, cubic foot per second]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

66,579

83,634

87,652

82,406

86,525

95,037

95,113

94,413

88,526

76,122

55,933

49,212

67,037

84,154

87,175

82,030

87,898

95,265

94,748

94,444

88,237

75,887

55,030

49,142

67,437

84,516

86,698

81,683

89,073

95,371

94,322

94,459

87,970

75,555

54,217

49,060

67,808

84,646

86,250

81,264

90,153

95,478

94,276

94,596

87,710

75,265

53,517

48,937

68,351

84,704

86,005

80,861

91,127

95,539

94,139

94,611

87,421

75,058

52,910

48,815

68,987

85,109

85,759

80,474

92,329

95,676

93,744

94,550

87,204

74,837

52,071

48,848

69,582

87,565

85,499

79,811

93,227

95,867

93,364

94,428

86,886

74,602

51,138

48,603

69,953

88,057

85,528

79,134

93,561

95,980

92,938

94,246

86,409

74,368

50,227

48,303

70,311

88,587

85,557

78,774

93,637

96,205

92,527

94,200

85,875

74,022

49,609

47,880

70,550

89,165

85,629

78,360

93,744

96,317

92,131

94,139

85,340

73,569

48,892

47,436

70,656

89,712

85,672

78,097

93,744

96,462

91,736

93,713

84,964

73,092

48,147

46,924

70,669

91,736

85,687

78,097

93,866

96,462

91,325

93,485

84,617

72,311

47,469

46,379

70,523

92,618

85,701

78,650

93,987

96,414

91,401

93,029

84,342

71,437

46,824

45,801

70,523

93,090

85,788

78,968

93,972

96,269

92,390

92,968

84,053

70,497

46,124

45,312

70,602

93,987

85,788

79,065

93,911

96,157

93,090

92,831

83,490

69,596

45,412

44,934

70,629

94,474

85,658

79,258

96,350

95,996

93,303

92,786

82,854

68,854

45,701

44,567

70,430

94,763

85,369

79,341

97,637

99,166

93,394

92,694

82,232

68,139

46,435

44,189

70,271

94,869

85,036

79,355

97,878

99,890

93,759

92,527

81,582

67,241

46,713

43,888

70,245

94,900

84,501

79,410

97,701

99,441

94,094

92,329

80,888

66,528

46,880

43,644

70,338

94,763

84,097

79,424

97,412

98,957

94,170

92,070

80,419

65,599

46,980

43,372

70,616

94,550

83,793

79,590

97,058

98,426

94,109

91,827

80,060

64,619

47,046

43,277

72,483

94,109

83,620

79,755

96,671

97,943

93,866

91,583

79,686

63,701

47,147

42,930

75,542

93,561

83,692

79,811

96,382

97,734

93,577

91,309

79,272

62,810

47,236

42,584

77,572

93,014

83,677

79,880

96,060

97,508

93,455

91,279

78,996

61,906

47,525

42,542

78,885

92,420

83,533

79,880

95,554

97,170

93,364

91,036

78,664

61,218

47,869

42,783

79,755

91,842

83,287

79,838

95,250

96,832

93,759

90,594

78,332

60,781

48,136

43,004

80,613

91,264

83,027

79,797

95,219

96,494

94,368

90,275

78,001

59,987

48,381

43,435

81,062

90,670

82,767

79,755

95,143

96,269

94,413

90,093

77,655

59,059

48,603

43,911

81,308

90,001

—

80,253

94,946

95,996

94,307

89,712

77,310

58,070

48,804

44,089

82,189

89,332

—

81,698

94,900

95,691

94,352

89,530

76,923

56,971

48,970

44,166

83,013

88,404

—

84,617

—

95,417

—

89,073

76,468

—

49,119

16,434

4,770

−4,885

2,211

8,375

380

−761

−5,340

−12,058 −19,151 −6,814

Change1

— −5,046

Equivalent change2 (Mgal/d)

530.1

153.9

−174.5

71.3

279.2

12.3

−25.4

−172.3

−389

−638.4

−219.8 −168.2

Equivalent change3 (ft3/s)

820

238

−270

110.3

432

−39.3

−267

−602

−988

−340

−260

1Change is calculated as the storage on the last day of each month minus the storage on the first day of each month. Net change for the year is –22,413.0 million gallons. Minimum and maximum storage for December through May are 66,579 and 99,890 million gallons, respectively; minimum and maximum storage for June through November are 42,542 and 95,113 million gallons, respectively. 2The net equivalent for the year is –61.4 million gallons per day. 3The net equivalent for the year is –95.0 cubic feet per second.

Tables 1, 3–11, and 13–20 21 Table 5. Storage in Neversink Reservoir, New York, for report year ending November 30, 2014. [Delaware River Master daily operations record; gage reading at 0800 hours; data provided daily through written communication from by New York City Department of Environmental Protection. Storage is given in millions of gallons above the elevation of 1,319.00 feet. Add 525 million gallons for total contents above the sill of the outlet tunnel at the elevation of 1,314.00 feet. Storage at spillway level is 34,941 million gallons. —, not applicable; Mgal/d, million gallons per day; ft3/s, cubic foot per second]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

29,275

32,781

30,721

26,868

26,684

33,929

34,828

34,577

34,497

30,164

27,176

24,822

29,387

32,866

30,762

26,864

27,060

34,281

34,833

34,492

34,473

29,823

27,141

24,523

29,509

32,771

30,799

26,829

27,430

34,321

34,837

34,582

34,419

29,509

27,111

24,242

29,575

32,647

30,657

26,578

27,844

34,330

34,715

34,557

34,345

29,181

27,090

23,963

29,661

32,705

30,533

26,329

28,207

34,306

34,759

34,591

34,281

28,959

27,107

23,653

29,810

32,866

30,538

26,068

28,508

34,286

34,616

34,513

34,101

28,769

27,090

23,385

30,009

33,553

30,542

25,809

28,650

34,253

34,621

34,414

34,018

28,738

27,064

23,187

30,146

33,403

30,227

25,562

29,057

34,330

34,626

34,243

33,939

28,694

27,039

23,004

30,273

33,221

30,232

25,557

29,616

34,301

34,660

34,096

33,853

28,504

27,026

22,818

30,350

32,933

30,259

25,545

29,995

34,276

34,675

34,062

33,780

28,315

27,009

22,630

30,401

32,943

29,914

25,345

30,324

34,384

34,562

34,096

33,698

28,158

26,988

22,431

30,442

34,468

29,571

25,197

30,762

34,492

34,587

34,106

33,465

28,105

26,962

22,427

30,401

34,931

29,159

25,027

31,132

34,404

34,306

34,101

33,427

28,071

26,923

22,408

30,346

34,936

28,879

24,789

31,512

34,340

34,873

34,863

33,369

28,049

26,897

22,408

30,442

34,966

28,884

24,625

31,873

34,194

34,803

34,996

33,302

28,005

26,872

22,400

30,487

34,892

28,778

24,649

32,848

34,121

34,621

35,329

33,235

27,957

26,919

22,392

30,510

34,655

28,592

24,670

33,062

35,254

34,448

35,130

33,163

27,909

27,077

22,392

30,433

34,325

28,451

24,686

33,005

35,244

34,321

35,070

33,101

27,862

27,102

22,501

30,355

33,988

28,460

24,670

32,958

35,041

34,276

35,060

32,890

27,809

27,107

22,568

30,255

33,620

28,469

24,719

32,871

34,976

34,267

35,041

32,657

27,757

27,094

22,595

30,204

33,254

28,478

24,780

32,762

35,021

34,291

35,016

32,430

27,719

27,081

22,611

30,447

32,834

28,526

24,826

32,624

35,095

34,325

35,001

32,396

27,658

27,090

22,615

31,113

32,377

28,596

24,879

32,757

35,135

34,345

34,863

32,330

27,606

26,936

22,630

31,765

31,925

28,623

24,924

32,876

35,110

34,257

34,749

32,264

27,554

26,846

22,665

31,981

31,658

28,228

24,949

32,972

35.105

34,047

34,734

32,189

27,507

26,651

22,969

32,169

31,652

27,831

24,981

33,081

35,070

34,281

34,710

31,990

27,442

26,427

23,100

32,173

31,545

27,417

24,998

33,201

35,045

34,340

34,680

31,771

27,395

26,169

23,195

32,184

31,341

27,048

25,023

33,288

35,016

34,443

34,680

31,541

27,339

25,913

23,286

32,321

31,141

—

25,097

33,369

34,966

34,492

34,650

31,211

27,288

25,650

23,346

32,667

31,021

—

25,470

33,461

34,892

34,533

34,591

30,850

27,227

25,379

23,401

30,501

32,824

30,877

—

26,257

—

34,853

—

34,547

—

25,106

—

Change1

3549

−1,904

−3,673

−611

6777

924

−295

−30.0 −3,996

−2,937

−2,070

−1,421

Equivalent change2 (Mgal/d)

114.5

−61.4

−131.2

−19.7

225.9

29.8

−9.8

−1.0

−128.9

−97.9

−66.8

−47.4

Equivalent change3 (ft3/s)

177

−95.0

−203

−30.5

349

46.1

−15.2

−2.0

−199

−151

−103

−73.0

1Change is calculated as the storage on the last day of each month minus the storage on the first day of each month. Net change for year is more than –5,874.0 million gallons. Minimum and maximum storage for December through May is 24,625 and 35,254 million gallons, respectively. Minimum and maximum storage for June through November is 22,392 and 35,329 million gallons, respectively. 2The net equivalent for the year is–16.1 million gallons per day. 3The net equivalent for year is –24.9 cubic feet per second.

22 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.

[Delaware River Master daily operations record. Diversions in million gallons per day (Mgal/d) for each 24-hour period beginning 0800 local time. For December 1–May 31, the average is computed beginning June 1, 2013, to the given date. For June 1–November 30, the average is computed beginning June 1, 2014, to the given date. The diversion calculation is computed as authorized within the Decree. —, not applicable.] Average

Average

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

303

181

611

1/2/2014

303

293

167

612

1/3/2014

273

224

149

612

619

1/4/2014

206

302

611

617

1/5/2014

206

302

611

187

617

1/6/2014

205

302

610

448

273

617

1/7/2014

205

303

328

611

431

253

618

1/8/2014

205

351

611

12/9/2013

446

276

618

1/9/2014

397

610

12/10/2013

308

400

619

1/10/2014

131

608

12/11/2013

180

411

619

1/11/2014

605

12/12/2013

208

440

619

1/12/2014

603

12/13/2013

368

311

115

620

1/13/2014

263

601

12/14/2013

398

273

620

1/14/2014

297

600

12/15/2013

364

250

620

1/15/2014

298

599

12/16/2013

427

619

1/16/2014

414

598

12/17/2013

237

311

619

1/17/2014

447

597

12/18/2013

350

274

152

620

1/18/2014

447

597

12/19/2013

350

115

149

620

1/19/2014

447

596

12/20/2013

336

129

619

1/20/2014

156

447

596

12/21/2013

616

1/21/2014

156

447

596

12/22/2013

613

1/22/2014

289

447

597

12/23/2013

328

223

613

1/23/2014

343

460

597

12/24/2013

353

302

130

614

1/24/2014

400

265

598

12/25/2013

353

303

614

1/25/2014

401

597

12/26/2013

353

151

614

1/26/2014

401

103

596

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

12/1/2013

448

273

620

1/1/2014

12/2/2013

451

273

620

12/3/2013

426

250

620

12/4/2013

299

12/5/2013

299

12/6/2013

399

12/7/2013 12/8/2013

Date

(Mgal/d) from

Date

June 1

(Mgal/d) from June 1

12/27/2013

103

361

131

614

1/27/2014

400

243

597

12/28/2013

436

613

1/28/2014

400

223

597

12/29/2013

437

613

1/29/2014

400

165

597

12/30/2013

354

611

1/30/2014

400

189

210

597

12/31/2013

301

184

129

611

1/31/2014

342

236

206

598

8,542

7,696

1,346

—

Total

5,994

2,344

7,371

—

Total

Tables 1, 3–11, and 13–20 23 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.—Continued

Date 2/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

259

236

Average (Mgal/d) from

Date

June 1 598

3/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

400

Average (Mgal/d) from June 1 595

2/2/2014

260

236

597

3/2/2014

400

594

2/3/2014

400

236

190

598

3/3/2014

406

262

595

2/4/2014

400

236

170

599

3/4/2014

400

265

595

2/5/2014

158

295

599

3/5/2014

400

264

595

2/6/2014

450

301

599

3/6/2014

400

233

263

596

2/7/2014

401

354

600

3/7/2014

400

276

243

597

2/8/2014

401

599

3/8/2014

383

597

2/9/2014

401

598

3/9/2014

396

596

2/10/2014

401

352

599

3/10/2014

399

207

596

2/11/2014

401

353

600

3/11/2014

400

207

596

2/12/2014

401

443

601

3/12/2014

400

238

596

2/13/2014

401

376

601

3/13/2014

413

253

299

598

2/14/2014

401

600

3/14/2014

400

301

209

599

2/15/2014

306

129

600

3/15/2014

400

259

599

2/16/2014

300

190

599

3/16/2014

400

302

599

2/17/2014

301

152

599

3/17/2014

400

302

600

2/18/2014

300

191

598

3/18/2014

400

302

600

2/19/2014

300

598

3/19/2014

400

302

600

2/20/2014

300

596

3/20/2014

399

302

601

2/21/2014

278

595

3/21/2014

399

302

601

2/22/2014

208

594

3/22/2014

399

302

601

2/23/2014

209

592

3/23/2014

399

302

602

2/24/2014

400

428

593

3/24/2014

383

302

602

2/25/2014

400

430

594

3/25/2014

288

601

2/26/2014

400

404

595

3/26/2014

305

292

601

2/27/2014

400

404

596

3/27/2014

400

300

601

2/28/2014

400

204

596

3/28/2014

400

301

602

9,637

1,800

4,605

—

3/29/2014

301

601

Total

3/30/2014

302

600

3/31/2014

205

303

599

10,891

6,225

2,481

—

Total

24 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.—Continued

Date

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

Average (Mgal/d) from

Date

June 1

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

Average (Mgal/d) from June 1

4/1/2014

201

303

599

5/1/2014

146

579

4/2/2014

202

302

599

5/2/2014

232

578

4/3/2014

202

302

598

5/3/2014

208

576

4/4/2014

100

303

598

5/4/2014

199

575

4/5/2014

596

5/5/2014

251

134

575

4/6/2014

594

5/6/2014

301

148

574

4/7/2014

206

187

593

5/7/2014

301

574

4/8/2014

202

201

593

5/8/2014

301

153

573

4/9/2014

205

592

5/9/2014

303

148

573

4/10/2014

206

590

5/10/2014

449

573

4/11/2014

221

589

5/11/2014

448

572

4/12/2014

396

589

5/12/2014

449

152

572

4/13/2014

383

588

5/13/2014

420

119

152

573

4/14/2014

586

5/14/2014

449

216

152

573

4/15/2014

233

585

5/15/2014

449

274

149

574

4/16/2014

177

249

585

5/16/2014

144

149

573

4/17/2014

393

584

5/17/2014

253

573

4/18/2014

154

329

584

5/18/2014

487

294

573

4/19/2014

182

298

584

5/19/2014

472

258

574

4/20/2014

178

298

583

5/20/2014

499

574

4/21/2014

400

298

584

5/21/2014

432

101

574

4/22/2014

401

583

5/22/2014

400

573

4/23/2014

500

583

5/23/2014

400

573

4/24/2014

500

196

583

5/24/2014

288

225

572

4/25/2014

500

583

5/25/2014

250

302

572

4/26/2014

500

583

5/26/2014

251

302

572

4/27/2014

300

145

582

5/27/2014

362

221

572

4/28/2014

301

201

582

5/28/2014

439

273

573

4/29/2014

301

582

5/29/2014

376

302

134

574

4/30/2014 Total

580

5/30/2014

307

302

574

7,283

2,325

1,868

—

5/31/2014

297

302

574

9,778

2,964

3,118

—

Total

Tables 1, 3–11, and 13–20 25 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.—Continued

Date

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

Average (Mgal/d) from

Date

June 1

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

Average (Mgal/d) from June 1

6/1/2014

300

302

602

7/1/2014

500

117

594

6/2/2014

299

302

602

7/2/2014

481

106

594

6/3/2014

300

202

597

7/3/2014

256

586

6/4/2014

300

236

582

7/4/2014

303

578

6/5/2014

300

302

225

631

7/5/2014

304

228

576

6/6/2014

300

301

626

7/6/2014

422

179

577

6/7/2014

300

301

622

7/7/2014

494

211

581

6/8/2014

300

301

620

7/8/2014

500

229

584

6/9/2014

300

301

617

7/9/2014

501

115

585

6/10/2014

297

301

132

629

7/10/2014

501

244

589

6/11/2014

300

301

626

7/11/2014

501

588

6/12/2014

300

396

633

7/12/2014

401

224

589

6/13/2014

226

607

7/13/2014

174

102

582

6/14/2014

436

595

7/14/2014

267

574

6/15/2014

134

372

589

7/15/2014

273

568

6/16/2014

338

302

598

7/16/2014

259

561

6/17/2014

489

212

604

7/17/2014

551

6/18/2014

485

192

608

7/18/2014

540

6/19/2014

319

102

599

7/19/2014

304

535

6/20/2014

396

222

601

7/20/2014

304

530

6/21/2014

396

231

602

7/21/2014

301

526

6/22/2014

400

234

604

7/22/2014

426

140

526

6/23/2014

400

134

602

7/23/2014

450

140

528

6/24/2014

199

590

7/24/2014

451

526

6/25/2014

116

571

7/25/2014

451

193

528

6/26/2014

493

268

152

584

7/26/2014

451

528

6/27/2014

500

301

592

7/27/2014

451

526

6/28/2014

500

301

599

7/28/2014

451

214

529

6/29/2014

500

596

7/29/2014

451

527

6/30/2014 Total

500

593

7/30/2014

451

210

530

9,485

4,880

3,433

—

7/31/2014

451

288

533

10,255

1,551

2,915

—

Total

26 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.—Continued

Date 8/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

450

Average (Mgal/d) from

Date

June 1 532

9/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

450

303

Average (Mgal/d) from June 1 554

8/2/2014

450

531

9/2/2014

450

303

556

8/3/2014

450

529

9/3/2014

450

303

558

8/4/2014

450

528

9/4/2014

450

189

559

8/5/2014

450

152

529

9/5/2014

450

156

559

8/6/2014

450

528

9/6/2014

450

558

8/7/2014

450

178

529

9/7/2014

450

557

8/8/2014

450

228

532

9/8/2014

450

142

557

8/9/2014

450

228

534

9/9/2014

450

138

557

8/10/2014

450

533

9/10/2014

450

138

558

8/11/2014

449

151

534

9/11/2014

450

193

559

8/12/2014

528

9/12/2014

415

228

559

8/13/2014

448

527

9/13/2014

451

227

561

8/14/2014

450

264

529

9/14/2014

451

227

562

8/15/2014

450

298

532

9/15/2014

450

561

8/16/2014

450

298

535

9/16/2014

450

560

8/17/2014

450

298

538

9/17/2014

450

214

561

8/18/2014

450

297

152

542

9/18/2014

379

226

562

8/19/2014

450

162

544

9/19/2014

450

226

563

8/20/2014

450

151

545

9/20/2014

450

226

564

8/21/2014

450

544

9/21/2014

450

225

565

8/22/2014

450

543

9/22/2014

418

225

565

8/23/2014

450

541

9/23/2014

450

230

566

8/24/2014

450

540

9/24/2014

450

565

8/25/2014

450

151

541

9/25/2014

450

564 565

8/26/2014

450

152

542

9/26/2014

450

248

8/27/2014

450

155

543

9/27/2014

450

280

567

8/28/2014

450

280

545

9/28/2014

450

279

568

8/29/2014

437

307

547

9/29/2014

449

279

570

8/30/2014

450

303

549

9/30/2014

8/31/2014

450

303

551

Total

13,505

2,280

2,419

—

Total

450

278

571

13,363

3,885

1,672

—

Tables 1, 3–11, and 13–20 27 Table 6.

Diversions to New York City water-supply system for report year ending November 30, 2014.—Continued

Date 10/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

450

278

Average (Mgal/d) from

Date

June 1 572

11/1/2014

East Delaware

West Delaware

Neversink

Tunnel (Mgal/d)

515

315

Average (Mgal/d) from June 1 568

10/2/2014

450

277

573

11/2/2014

493

303

570

10/3/2014

449

277

575

11/3/2014

493

303

571

10/4/2014

400

277

575

11/4/2014

493

303

573

10/5/2014

401

276

576

11/5/2014

493

303

574

10/6/2014

401

280

577

11/6/2014

489

220

575

10/7/2014

401

280

578

11/7/2014

400

203

575

10/8/2014

401

577

11/8/2014

400

203

575

10/9/2014

401

575

11/9/2014

400

203

576

10/10/2014

401

574

11/10/2014

400

203

576

10/11/2014

401

573

11/11/2014

300

574

10/12/2014

401

571

11/12/2014

299

572

10/13/2014

401

570

11/13/2014

296

571

10/14/2014

401

569

11/14/2014

298

569

10/15/2014

401

568

11/15/2014

299

568

10/16/2014

399

566

11/16/2014

297

566

10/17/2014

562

11/17/2014

301

564

10/18/2014

558

11/18/2014

301

563

10/19/2014

554

11/19/2014

301

561

10/20/2014

375

553

11/20/2014

217

559

10/21/2014

498

553

11/21/2014

421

179

560

10/22/2014

497

214

554

11/22/2014

450

227

560

10/23/2014

486

301

555

11/23/2014

450

231

561

10/24/2014

494

303

557

11/24/2014

450

231

562

10/25/2014

493

303

559

11/25/2014

456

231

562 560

10/26/2014

460

303

560

11/26/2014

149

10/27/2014

472

303

561

11/27/2014

557

10/28/2014

366

303

562

11/28/2014

215

229

557

10/29/2014

494

303

564

11/29/2014

397

275

557

10/30/2014

494

303

565

11/30/2014

10/31/2014

494

303

567

Total

12,182

1,951

2,939

—

Total

485

276

558

10,958

1,947

2,559

—

28 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 7. Consumption of water by New York City, from 1950 to 2014. [Data provided through written communication by New York City Department of Environmental Protection, Bureau of Water Supply. Mgal/d, million gallons per day; Ggal, billion gallons]

Average daily consumption Year

Annual consumption (Ggal)

City proper (Mgal/d)

Outside communities (Mgal/d)

Total (Mgal/d)

1950

953.3

29.1

982.4

358.6

1951

1,041.9

28.1

1,070.0

390.6

1952

1,087.0

32.7

1,119.7

409.8

1953

1,093.9

44.6

1,138.5

415.6

1954

1,063.4

46.3

1,109.7

405.0

1955

1,109.9

45.3

1,155.2

421.6

1956

1,111.3

48.9

1,160.2

424.6

1957

1,169.0

57.2

1,226.2

447.6

1958

1,152.9

49.6

1,202.5

438.9

1959

1,204.3

60.3

1,264.6

461.6

1960

1,199.4

58.9

1,258.3

460.5

1961

1,221.0

64.0

1,285.0

469.0

1962

1,207.6

68.8

1,276.4

465.9

1963

1,218.0

76.7

1,294.7

472.6

1964

1,189.2

79.4

1,268.6

464.3

1965

1,052.1

71.2

1,123.3

410.0

1966

1,044.9

73.2

1,118.1

408.1

1967

1,135.3

71.0

1,206.3

440.3

1968

1,242.0

78.2

1,320.2

483.2

1969

1,328.7

80.1

1,408.8

514.2

1970

1,400.3

90.4

1,490.7

544.1

1971

1,423.6

87.9

1,511.5

551.7

1972

1,412.4

83.0

1,495.4

547.3

1973

1,448.9

95.4

1,544.3

563.7

1974

1,441.8

96.3

1,538.1

561.4

1975

1,415.0

92.1

1,507.1

550.1

1976

1,435.0

95.8

1,530.8

560.3

1977

1,483.0

104.7

1,587.7

579.5

1978

1,479.4

103.0

1,582.4

577.6

1979

1,513.0

104.6

1,617.6

590.4

1980

1,506.3

110.1

1,616.3

591.6

1981

1,309.5

100.0

1,409.5

514.5

1982

1,383.0

104.8

1,487.8

543.1

1983

1,424.2

112.6

1,536.8

561.0

1984

1,465.2

113.9

1,579.1

578.0

1985

1,325.4

106.5

1,431.9

522.7

1986

1,351.1

115.2

1,466.3

535.2

1987

1,447.1

119.8

1,566.9

571.9

1988

1,484.3

125.6

1,609.9

589.1

1989

1,402.0

113.4

1,515.4

553.2

Tables 1, 3–11, and 13–20 29 Table 7. Consumption of water by New York City, from 1950 to 2014.—Continued [Data provided through written communication by New York City Department of Environmental Protection, Bureau of Water Supply. Mgal/d, million gallons per day; Ggal, billion gallons]

Average daily consumption Year

Annual consumption (Ggal)

City proper (Mgal/d)

Outside communities (Mgal/d)

Total (Mgal/d)

1990

1,424.4

122.4

1,546.8

564.6

1991

1,469.9

123.6

1,593.5

581.6

1992

1,368.7

113.9

1,482.6

542.6

1993

1,368.9

118.8

1,487.7

543.0

1994

1,357.8

119.2

1,477.0

539.1

1995

1,326.1

123.1

1,449.2

529.0

1996

1,283.5

120.2

1,403.7

512.4

1997

1,201.3

123.5

1,324.8

483.6

1998

1,220.0

124.7

1,344.7

490.8

1999

1,237.2

128.6

1,365.8

498.5

2000

1,240.4

124.9

1,365.3

499.7

2001

1,184.0

128.4

1,312.4

479.0

2002

1,135.6

121.1

1,256.7

458.7

2003

1,093.7

115.9

1,209.6

441.5

2004

1,099.6

117.5

1,217.1

445.5

2005

1,107.6

123.8

1,231.4

449.5

2006

1,069.2

116.8

1,186.0

432.9

2007

1,114.0

122.9

1,237.0

451.5

2008

1,082.9

114.8

1,197.7

438.4

2009

1,007.2

109.4

1,116.6

407.6

2010

1,039.0

119.0

1,158.0

422.7

2011

1,021.0

116.0

1,137.0

415.0

2012

1,009.1

110.2

1,119.3

409.7

2013

1,006.1

110.1

1,116.2

407.4

2014

996.0

109.6

1,105.6

403.5

30 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 8. Diversions by the State of New Jersey, daily mean discharge, Delaware and Raritan Canal at Port Mercer, New Jersey (U.S. Geological Survey site number 01460440), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019e). All values except total are in million gallons per day (Mgal/d); total in million gallons (Mgal). —, not applicable; e, estimated]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

160

e100

e90

104

100

e72

100

101

100

101

100

104

100

105

104

107

109

100

109

103

100

101

—

e94

—

e97

—

Total1

2,395

2,772

2,676

2,792

2,246

2,515

2,548

2,900

2,831

2,652

2,796

2,674

Mean2

77.3

89.4

99.1

90.1

1The year’s total is 31,099 million gallons. 2The combined mean is 88.5 million gallons per day.

88.2

81.0

84.9

93.5

91.3

88.4

90.2

89.1

Table 9. New York City reservoir release design data, from December 1, 2013, to November 30, 2014. [Delaware River Master daily operations record. The Montague flow objective was 1,750 ft3/s. Column (col.) 1 was provided by electric utility PPL Corporation; col. 2 provided by electric utility Eagle Creek Renewable Energy; col. 3 computed from index stations (fig. 1); col. 4 computed increase in runoff based on quantitative precipitation forecasts; col. 5 = col. 1 + col. 2 + col. 3 + col. 4; col. 6 = design rate − col. 5, when positive, otherwise col. 6 = 0; col. 7 = col. 14 (4 days earlier); col. 8, directed release amount from the Office of the Delaware River Master = col. 6 + col. 7, when positive, otherwise col. 8 =0; col. 9 = col. 7 from table 10; col. 10 = summation of col. 9; col. 11 = flow objective − (col. 9 + col. 10 from table 10) when positive, otherwise col. 11 = 0; col. 12 = summation of col. 11; col. 13 = col. 10 − col. 12; col. 14 = col. 13 divided by −10, limited to ±50 cubic feet per second ; cols. 10, 12, 13, and 14 are accumulated from the previous water year starting June 1, 2011, with these values being reset on June 1, 2012; X, a miscalculation of col. 12 – Col 10 was recorded during the directed release design process; Y, the balancing adjustment was not reset on June 15, 2012. ft3/s, cubic foot per second; (ft3/s)-d, cubic foot per second for a day] Advance estimate of discharge of Delaware River at Montague, New Jersey, exclusive of New York City

Computation of balancing adjustment

reservoir releases Powerplant release forecasts

Uncontrolled runoff Discharge

Indicated

Balancing

deficiency

adjustment

Directed

Adjusted directed

release

(ft3/s)

Date of advance

Lake

Rio

Current

Weather

Montague site1

estimate

Wallenpaupack

Reservoir

condition

adjustment

date

(ft3/s)

Col. 1

Col. 2

Col. 3

Col. 4

7/29/2014

222

142

1,535

8/1/2014

1,900

7/30/2014

335

1,535

8/2/2014

1,970

7/31/2014

222

1,483

102

8/3/2014

1,807

8/1/2014

222

1,394

191

8/4/2014

1,878

8/2/2014

221

142

1,375

8/5/2014

1,754

8/3/2014

221

142

1,500

8/6/2014

1,928

8/4/2014

221

142

1,375

8/7/2014

1,761

8/5/2014

221

142

1,219

8/8/2014

8/6/2014

347

142

1,121

8/7/2014

221

319

1,100

8/8/2014

221

1,162

8/9/2014

182

8/10/2014

182

8/11/2014 8/12/2014

(ft3/s)

Actual deficiency

Cumulative

Balancing

difference

adjust-

([ft3/s]-d)

ment (ft3/s)

Daily

Cumulative

Daily

Cumulative

(ft3/s)

([ft3/s]-d)

(ft3/s)

([ft3/s]-d)

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

148

−148

148

−148

318

466

−466

207

673

−673

772

−772

180

952

−952

180

1,132

−1,132

1,632

118

168

300

1,432

−1,264

8/9/2014

1,616

134

184

352

156

1,588

−1,236

8/10/2014

1,640

110

170

522

489

2,077

−1,555

8/11/2014

1,383

367

417

939

579

2,656

−1,717

1,091

8/12/2014

1,273

477

527

1,466

470

3,126

−1,660

966

412

8/13/2014

1,560

190

240

1,706

432

3,558

−1,852

182

853

1,803

8/14/2014

2,838

1,706

139

3,697

−1,991

182

124

919

2,793

8/15/2014

4,018

1,706

359

4,056

−2,350

8/13/2014

1,255

8/16/2014

1,426

324

374

2,080

702

4,758

−2,678

8/14/2014

182

1,213

8/17/2014

1,399

351

401

2,481

828

5,586

−3,105

8/15/2014

182

1,453

8/18/2014

1,650

100

150

2,631

896

6,482

−3,851

8/16/2014

165

1,116

8/19/2014

1,286

464

514

3,145

766

7,248

−4,103

8/17/2014

165

675

8/20/2014

840

910

960

962

4,107

682

7,930

−3,823

8/18/2014

165

625

8/21/2014

803

947

997

976

5,083

686

8,616

−3,533

8/19/2014

165

600

8/22/2014

782

968

1,018

6,071

8,616

−2,545

8/20/2014

165

600

8/23/2014

813

937

987

985

7,056

8,616

−1,558

8/21/2014

600

8/24/2014

649

1,101

1,151

8,209

101

8,717

−508

Col. 5

Col. 6

Col. 7

Col. 8

The estimated Montague discharge was greater than the Montague design rate from 12/01/2013 to 08/01/2014

Tables 1, 3–11, and 13–20 31

[Delaware River Master daily operations record. The Montague flow objective was 1,750 ft3/s. Column (col.) 1 was provided by electric utility PPL Corporation; col. 2 provided by electric utility Eagle Creek Renewable Energy; col. 3 computed from index stations (fig. 1); col. 4 computed increase in runoff based on quantitative precipitation forecasts; col. 5 = col. 1 + col. 2 + col. 3 + col. 4; col. 6 = design rate − col. 5, when positive, otherwise col. 6 = 0; col. 7 = col. 14 (4 days earlier); col. 8, directed release amount from the Office of the Delaware River Master = col. 6 + col. 7, when positive, otherwise col. 8 =0; col. 9 = col. 7 from table 10; col. 10 = summation of col. 9; col. 11 = flow objective − (col. 9 + col. 10 from table 10) when positive, otherwise col. 11 = 0; col. 12 = summation of col. 11; col. 13 = col. 10 − col. 12; col. 14 = col. 13 divided by −10, limited to ±50 cubic feet per second ; cols. 10, 12, 13, and 14 are accumulated from the previous water year starting June 1, 2011, with these values being reset on June 1, 2012; X, a miscalculation of col. 12 – Col 10 was recorded during the directed release design process; Y, the balancing adjustment was not reset on June 15, 2012. ft3/s, cubic foot per second; (ft3/s)-d, cubic foot per second for a day] Advance estimate of discharge of Delaware River at Montague, New Jersey, exclusive of New York City

Computation of balancing adjustment

reservoir releases Powerplant release forecasts

Uncontrolled runoff

Date of advance

Lake

Rio

Current

Weather

Montague site1

estimate

Wallenpaupack

Reservoir

condition

adjustment

date

(ft3/s)

Discharge

Indicated

Balancing

deficiency

adjustment

(ft3/s)

Directed

Adjusted directed

release

(ft3/s)

Actual deficiency

Daily

Cumulative

Daily

Cumulative

(ft3/s)

([ft3/s]-d)

(ft3/s)

([ft3/s]-d)

Cumulative

Balancing

difference

adjust-

([ft3/s]-d)

ment (ft3/s)

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

8/22/2014

1,750

8/25/2014

1,841

8,209

285

9,002

−793

8/23/2014

352

2,027

8/26/2014

2,455

8,209

245

9,247

−1,038

8/24/2014

352

1,750

8/27/2014

2,173

8,209

192

9,439

1,230

8/25/2014

352

1,298

8/28/2014

1,723

8,286

316

9,755

−1,469

8/26/2014

352

1,096

8/29/2014

1,505

245

295

8,581

660

10,415

−1,834

8/27/2014

352

1,053

8/30/2014

1,429

321

371

8,952

742

11,157

−2,205

8/28/2014

967

8/31/2014

968

782

832

9,784

582

11,739

−1,955

8/29/2014

750

9/1/2014

759

991

1,041

1,039

10,823

769

12,508

−1,685

8/30/2014

204

475

9/2/2014

698

1,052

1,102

1,103

11,926

663

13,171

−1,245

8/31/2014

204

450

169

9/3/2014

823

927

977

763

12,689

483

13,654

−965

9/1/2014

204

650

9/4/2014

912

838

888

13,579

338

13,992

−415

9/2/2014

204

665

9/5/2014

933

817

867

865

14,442

475

14,467

−25

9/3/2014

349

720

9/6/2014

1,071

679

288

14,607

306

14,768

−161

9/4/2014

470

654

9/7/2014

1,133

617

667

670

15,277

560

15,328

−51

9/5/2014

204

900

113

9/8/2014

1,217

533

575

15,910

863

16,191

−281

9/6/2014

204

877

9/9/2014

1,167

583

585

16,541

901

17,097

−556

9/7/2014

204

803

9/10/2014

1,007

743

759

761

17,302

891

17,988

−686

9/8/2014

204

620

9/11/2014

824

926

931

930

18,232

890

18,878

−646

9/9/2014

204

124

446

9/12/2014

774

976

1,004

19,236

1,014

19,892

−656

9/10/2014

204

573

9/13/2014

797

953

1,003

1,002

20,238

1,122

21,014

−776

9/11/2014

204

563

9/14/2014

783

967

1,017

1,021

21,259

1,041

22,055

−796

9/12/2014

500

9/15/2014

538

1,212

1,262

22,521

1,072

23,127

−606

9/13/2014

495

9/16/2014

550

1,200

1,250

1,247

23,768

1,107

24,234

−466

9/14/2014

235

348

9/17/2014

621

1,129

1,179

1,177

24,945

947

25,181

−236

9/15/2014

235

429

9/18/2014

690

1,060

1,100

26,050

945

26,126

−76

32 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 9. New York City reservoir release design data, from December 1, 2013, to November 30, 2014.—Continued

Table 9. New York City reservoir release design data, from December 1, 2013, to November 30, 2014.—Continued [Delaware River Master daily operations record. The Montague flow objective was 1,750 ft3/s. Column (col.) 1 was provided by electric utility PPL Corporation; col. 2 provided by electric utility Eagle Creek Renewable Energy; col. 3 computed from index stations (fig. 1); col. 4 computed increase in runoff based on quantitative precipitation forecasts; col. 5 = col. 1 + col. 2 + col. 3 + col. 4; col. 6 = design rate − col. 5, when positive, otherwise col. 6 = 0; col. 7 = col. 14 (4 days earlier); col. 8, directed release amount from the Office of the Delaware River Master = col. 6 + col. 7, when positive, otherwise col. 8 =0; col. 9 = col. 7 from table 10; col. 10 = summation of col. 9; col. 11 = flow objective − (col. 9 + col. 10 from table 10) when positive, otherwise col. 11 = 0; col. 12 = summation of col. 11; col. 13 = col. 10 − col. 12; col. 14 = col. 13 divided by −10, limited to ±50 cubic feet per second ; cols. 10, 12, 13, and 14 are accumulated from the previous water year starting June 1, 2011, with these values being reset on June 1, 2012; X, a miscalculation of col. 12 – Col 10 was recorded during the directed release design process; Y, the balancing adjustment was not reset on June 15, 2012. ft3/s, cubic foot per second; (ft3/s)-d, cubic foot per second for a day] Advance estimate of discharge of Delaware River at Montague, New Jersey, exclusive of New York City

Computation of balancing adjustment

reservoir releases Powerplant release forecasts

Uncontrolled runoff

Date of advance

Lake

Rio

Current

Weather

Montague site1

estimate

Wallenpaupack

Reservoir

condition

adjustment

date

(ft3/s)

Col. 1

Col. 2

Col. 3

Col. 4

9/16/2014

235

500

9/17/2014

235

473

9/18/2014

106

563

9/19/2014

471

9/20/2014

235

9/21/2014

235

9/22/2014

235

9/23/2014

Discharge

Indicated

Balancing

deficiency

adjustment

(ft3/s)

Directed

Adjusted directed

release

(ft3/s)

Actual deficiency

Cumulative

Balancing

difference

adjust-

([ft3/s]-d)

ment (ft3/s) Col. 14

Daily

Cumulative

Daily

Cumulative

(ft3/s)

([ft3/s]-d)

(ft3/s)

([ft3/s]-d)

Col. 10

Col. 11

Col. 12

Col. 13

Col. 6

Col. 7

Col. 8

Col. 9

9/19/2014

738

1,012

1,062

1,061

27,111

1,041

27,167

−56

9/20/2014

708

1,042

1,089

1,087

28,198

1,007

28,174

−2

9/21/2014

669

1,081

1,105

1,114

29,340

1,074

29,248

−10

9/22/2014

471

1,279

1,287

1,278

30,618

1,248

30,496

125

−12

420

9/23/2014

685

1,065

1,071

1,075

31,693

1,045

31,541

155

−16

419

9/24/2014

667

1,083

−2

1,081

1,087

32,780

977

32,518

268

−27

451

9/25/2014

686

1,064

−10

1,055

1,050

33,830

1,050

33,568

262

−26

235

430

9/26/2014

665

1,085

−12

1,073

1,067

34,897

1,097

34,665

232

−23

9/24/2014

235

431

9/27/2014

745

1,005

−16

990

995

35,892

915

35,580

312

−50

9/25/2014

248

437

9/28/2014

694

1,056

−27

1,029

1,036

36,928

996

36,576

352

−50

9/26/2014

151

465

9/29/2014

616

1,134

−26

1,108

1,110

38,038

1,110

37,686

352

−50

9/27/2014

151

400

9/30/2014

551

1,199

−23

1,176

1,173

39,211

1,033

38,719

492

−50

9/28/2014

400

10/1/2014

404

1,346

−50

1,296

1,300

40,511

1,210

39,929

582

−50

9/29/2014

410

10/2/2014

442

1,308

−50

1,258

41,769

1,178

41,107

662

−50

9/30/2014

106

410

10/3/2014

576

1,174

−50

1,124

42,893

1,164

42,271

622

−50

10/1/2014

106

435

106

10/4/2014

647

1,103

−50

1,053

1,054

43,947

944

43,215

732

−50

10/2/2014

394

340

10/5/2014

734

1,016

−50

966

965

44,912

1,125

44,340

572

−50

10/3/2014

410

516

10/6/2014

926

824

−50

774

773

45,685

1,093

45,433

252

−25

10/4/2014

432

292

10/7/2014

724

1,026

−50

976

982

46,667

1,152

46,585

−8

10/5/2014

492

10/8/2014

520

1,230

−50

1,180

1,181

47,848

1,181

47,766

−8

10/6/2014

400

10/9/2014

499

1,251

−50

1,201

1,198

49,046

1,218

48,984

−6

10/7/2014

443

10/10/2014

532

1,218

−25

1,193

50,239

1,273

50,257

−18

10/8/2014

514

10/11/2014

520

1,230

−8

1,222

1,227

51,466

1,277

51,534

−68

10/9/2014

474

10/12/2014

475

1,275

−8

1,267

52,733

1,307

52,841

−108

10/10/2014

457

10/13/2014

466

1,284

−6

1,278

1,277

54,010

1,207

54,048

−38

Tables 1, 3–11, and 13–20 33

Col. 5

Computation of balancing adjustment

reservoir releases Powerplant release forecasts

Uncontrolled runoff

Date of advance

Lake

Rio

Current

Weather

Montague site1

estimate

Wallenpaupack

Reservoir

condition

adjustment

date

(ft3/s)

Col. 1

Col. 2

Col. 3

Col. 4

10/11/2014

106

438

10/12/2014

411

10/13/2014

411

10/14/2014

400

10/15/2014

404

10/16/2014

10/17/2014

10/18/2014

10/19/2014

Discharge

Indicated

Balancing

deficiency

adjustment

(ft3/s)

Directed

Adjusted directed

release

(ft3/s)

Actual deficiency

Daily

Cumulative

Daily

Cumulative

(ft3/s)

([ft3/s]-d)

(ft3/s)

([ft3/s]-d)

Cumulative

Balancing

difference

adjust-

([ft3/s]-d)

ment (ft3/s) Col. 14

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

10/14/2014

561

1,189

1,191

1,195

55,205

1,225

55,273

−68

10/15/2014

457

1,293

1,300

1,297

56,502

1,327

56,600

−98

10/16/2014

498

1,252

1,263

57,765

56,600

1,165

−50

299

10/17/2014

699

1,051

1,055

1,056

58,821

56,600

2,221

−50

680

10/18/2014

1,084

666

586

59,251

56,600

2,651

−50

1,907

229

10/19/2014

2,136

59,251

56,600

2,651

−50

1,809

10/20/2014

1,839

−50

59,251

56,600

2,651

−50

2,182

10/21/2014

2,235

−50

59,251

167

56,767

2,484

−50

124

2,027

10/22/2014

2,238

−50

59,251

277

57,044

2,207

−50

10/20/2014

1,907

204

10/23/2014

2,182

−50

59,251

127

57,171

2,080

−50

10/21/2014

1,655

449

10/24/2014

2,104

−50

59,251

57,171

2,080

−50

10/22/2014

1,346

467

10/25/2014

1,813

−50

59,251

57,171

2,080

−50

10/23/2014

1,428

10/26/2014

1428

322

−50

272

59,523

57,178

2,345

−50

10/24/2014

1,753

10/27/2014

1,753

−50

59,523

199

57,377

2,146

−50

10/25/2014

1,833

10/28/2014

1,833

−50

59,523

239

57,616

1,907

−50

10/26/2014

1,700

10/29/2014

1,765

−50

59,523

259

57,875

1,648

−50

10/27/2014

1,690

10/30/2014

1,759

−50

59,523

419

58,294

1,229

−50

10/28/2014

1,344

10/31/2014

1,376

374

−50

324

326

59,849

436

58,730

1,119

−50

10/29/2014

1,720

11/1/2014

1,752

−50

59,849

484

59,214

635

−50

10/30/2014

1,344

11/2/2014

1,350

400

−50

350

353

60,202

593

59,807

395

−40

10/31/2014

1,116

11/3/2014

1,190

560

−50

510

513

60,715

563

60,370

345

−34

11/1/2014

1,099

11/4/2014

1,108

642

−50

592

596

61,311

576

60,946

365

−36

11/2/2014

1,002

11/5/2014

1,056

694

−50

644

674

61,985

654

61,600

385

−38

11/3/2014

982

11/6/2014

985

765

−40

725

742

62,727

762

62,362

365

−36

11/4/2014

1,012

955

11/7/2014

1,967

−34

62,727

670

63,032

−305

34 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 9. New York City reservoir release design data, from December 1, 2013, to November 30, 2014.—Continued

Computation of balancing adjustment

reservoir releases Powerplant release forecasts

Uncontrolled runoff

Date of advance

Lake

Rio

Current

Weather

Montague site1

estimate

Wallenpaupack

Reservoir

condition

adjustment

date

(ft3/s)

Col. 1

Col. 2

Col. 3

Col. 4

11/5/2014

751

459

11/6/2014

713

167

11/7/2014

750

11/8/2014

11/9/2014

11/10/2014 11/11/2014

Discharge

Indicated

Balancing

deficiency

adjustment

(ft3/s)

Directed

Adjusted directed

release

(ft3/s)

Actual deficiency

Daily

Cumulative

Daily

Cumulative

(ft3/s)

([ft3/s]-d)

(ft3/s)

([ft3/s]-d)

Cumulative

Balancing

difference

adjust-

([ft3/s]-d)

ment (ft3/s)

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

Col. 13

Col. 14

11/8/2014

1,210

540

−36

651

649

63,376

849

63,881

−505

11/9/2014

880

870

−38

832

833

64,209

803

64,684

−475

11/10/2014

756

994

−36

958

959

65,168

839

65,523

−355

750

11/11/2014

750

1,000

1,030

1,034

66,202

904

66,427

−225

725

11/12/2014

779

971

1,021

1,019

67,221

679

67,106

115

−12

714

11/13/2014

717

1,033

1,081

1,079

68,300

719

67,825

475

−48

106

678

11/14/2014

792

958

994

985

69,285

835

68,660

625

−50

11/12/2014

680

11/15/2014

691

1,059

1,081

70,366

1,051

69,711

655

−50

11/13/2014

831

11/16/2014

844

906

−12

894

901

71,267

1,021

70,732

535

−50

11/14/2014

807

11/17/2014

808

942

−48

894

883

72,150

943

71,675

475

−48

11/15/2014

732

11/18/2014

798

952

−50

902

903

73,053

703

72,378

675

−50

11/16/2014

124

350

146

11/19/2014

620

1,130

−50

1,080

1,074

74,127

114

72,492

1,635

−50

11/17/2014

106

350

113

11/20/2014

569

1,181

−50

1,131

1,130

75,257

380

72,872

2,385

−50

11/18/2014

639

11/21/2014

639

1,115

−48

1,067

1,068

76,325

618

73,490

2,835

−50

11/19/2014

966

11/22/2014

968

782

−50

732

736

77,061

756

74,246

2,815

−50

11/20/2014

906

11/23/2014

915

835

−50

785

77,846

735

74,981

2,865

−50

11/21/2014

828

11/24/2014

903

847

−50

797

785

78,631

425

75,406

3,225

−50

11/22/2014

809

347

11/25/2014

1,156

594

−50

544

548

79,179

75,406

3,773

−50

11/23/2014

844

300

11/26/2014

1,144

606

−50

556

559

79,738

75,406

4,332

−50

11/24/2014

916

414

11/27/2014

1,330

420

−50

370

375

80,113

75,406

4,707

−50

11/25/2014

1,079

732

11/28/2014

1,811

−50

80,113

75,406

4,707

−50

11/26/2014

2,307

1,048

11/29/2014

3,355

−50

80,113

75,406

4,707

−50

11/27/2014

2,531

11/30/2014

2,533

−50

80,113

75,406

4,707

−50

1The site is the USGS streamgage at Montague, New Jersey (U.S. Geological Survey site number 01438500).

Tables 1, 3–11, and 13–20 35

Col. 5

[Delaware River Master daily operations record. All provided measurements are the mean discharge in cubic feet per second for 24 hours. Column (col.) 1 = directed release ordered by the Office of Delaware River Master; col. 2 = 24 hours beginning 1200 of date shown; col. 3 = 24 hours ending 2400 one day later; col. 4 = 24 hours beginning 1500 one day later; col. 5 = 24 hours beginning 0800 of date shown; col. 6 = 24 hours beginning 1600 of date shown; col. 7 = col. 2 + col. 3 + col. 4 in response to direction (col. 1); col. 8 = col. 2 + col. 3 + col. 4 − col. 7; col. 9 = col. 5 + col. 6; col. 10 = col. 11 − col. 7 − col. 8 − col. 9; col. 11 = 24 hours of calendar day shown; col. 12 = Interim Excess Release Quantity (IERQ) bank releases; —, not applicable] Controlled releases from New York City reservoirs

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey Controlled releases

Directed

Date

11/28/2013

Pepacton

Cannonsville

Neversink

Col. 1

Col. 2

Col. 3

Col. 4

102

150

Amount

Date

11/30/2013

Lake Wallenpaupack

Rio Reservoir

Col. 5

Col. 6

106

Date

12/1/2013

New York City reservoirs

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Directed

Other

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

308

114

3,968

4,390

11/29/2013

101

150

12/1/2013

142

12/2/2013

307

142

3,591

4,040

11/30/2013

101

150

12/2/2013

12/3/2013

307

3,164

3,560

12/1/2013

101

150

12/3/2013

12/4/2013

307

2,973

3,280

12/2/2013

101

150

12/4/2013

106

12/5/2013

307

106

2,807

3,220

12/3/2013

101

150

12/5/2013

142

12/6/2013

307

142

3,181

3,630

12/4/2013

101

152

12/6/2013

12/7/2013

309

5,138

5,500

12/5/2013

101

152

12/7/2013

160

12/8/2013

309

168

4,903

5,380

12/6/2013

101

152

12/8/2013

12/9/2013

309

4,151

4,460

12/7/2013

101

152

12/9/2013

124

12/10/2013

312

124

3,804

4,240

12/8/2013

102

189

12/10/2013

124

12/11/2013

365

124

3,421

3,910

12/9/2013

150

224

12/11/2013

372

12/12/2013

448

372

2,850

3,670

12/10/2013

150

220

12/12/2013

496

12/13/2013

444

496

2,330

3,270

12/11/2013

150

221

12/13/2013

355

12/14/2013

445

355

2,270

3,070

0 0

12/12/2013

150

224

12/14/2013

177

12/15/2013

448

177

2,125

2,750

12/13/2013

150

224

12/15/2013

301

12/16/2013

448

301

1,901

2,650

12/14/2013

150

226

12/16/2013

532

12/17/2013

450

532

1,618

2,600

12/15/2013

150

226

12/17/2013

532

12/18/2013

450

532

1,618

2,600

12/16/2013

150

226

12/18/2013

532

12/19/2013

450

532

1,768

2,750

12/17/2013

150

226

12/19/2013

106

12/20/2013

450

106

2,714

3,270

12/18/2013

150

226

12/20/2013

213

12/21/2013

450

213

2,507

3,170

12/19/2013

150

226

12/21/2013

319

12/22/2013

450

319

4,281

5,050

12/20/2013

150

226

12/22/2013

12/23/2013

450

16,650

17,100

0 0

12/21/2013

150

227

12/23/2013

12/24/2013

451

14,649

15,100

12/22/2013

150

226

12/24/2013

12/25/2013

450

9,750

10,200

12/23/2013

152

226

12/25/2013

12/26/2013

452

6,948

7,400

36 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 10. Controlled releases from reservoirs in the upper Delaware River Basin and segregation of flow of Delaware River at Montague, New Jersey (U.S. Geological Survey site number 01438500), for report year ending November 30, 2014.—Continued [Delaware River Master daily operations record. All provided measurements are the mean discharge in cubic feet per second for 24 hours. Column (col.) 1 = directed release ordered by the Office of Delaware River Master; col. 2 = 24 hours beginning 1200 of date shown; col. 3 = 24 hours ending 2400 one day later; col. 4 = 24 hours beginning 1500 one day later; col. 5 = 24 hours beginning 0800 of date shown; col. 6 = 24 hours beginning 1600 of date shown; col. 7 = col. 2 + col. 3 + col. 4 in response to direction (col. 1); col. 8 = col. 2 + col. 3 + col. 4 − col. 7; col. 9 = col. 5 + col. 6; col. 10 = col. 11 − col. 7 − col. 8 − col. 9; col. 11 = 24 hours of calendar day shown; col. 12 = Interim Excess Release Quantity (IERQ) bank releases; —, not applicable] Controlled releases from New York City reservoirs

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

150

224

12/26/2013

142

12/27/2013

448

142

5,870

6,460

12/25/2013

152

227

12/27/2013

12/28/2013

453

5,008

5,550

12/26/2013

150

226

12/28/2013

12/29/2013

450

4,551

5,090

12/27/2013

150

227

12/29/2013

142

12/30/2013

451

142

9,387

9,980

12/28/2013

150

227

12/30/2013

426

12/31/2013

464

430

9,406

10,300

12/29/2013

150

224

125

12/31/2013

426

1/1/2014

499

426

6,635

7,560

12/30/2013

152

226

125

1/1/2014

102

230

1/2/2014

503

332

6,035

6,870

12/31/2013

150

224

125

1/2/2014

383

550

1/3/2014

499

933

4,958

6,390

1/1/2014

150

224

125

1/3/2014

1,148

816

1/4/2014

499

1,964

4,137

6,600

1/2/2014

150

224

125

1/4/2014

648

532

1/5/2014

499

1,180

3,451

5,130

1/3/2014

152

224

125

1/5/2014

112

319

1/6/2014

501

431

4,618

5,550

1/4/2014

152

224

125

1/6/2014

1,109

709

1/7/2014

501

1,818

14,581

16,900

1/5/2014

150

224

125

1/7/2014

1,286

851

1/8/2014

499

2,137

9,164

11,800

1/6/2014

150

385

125

1/8/2014

902

798

1/9/2014

660

1,700

7,640

10,000

1/7/2014

150

693

125

1/9/2014

109

337

1/10/2014

968

446

6,356

7,770

1/8/2014

152

696

125

1/10/2014

412

1/11/2014

973

412

6,335

7,720

1/9/2014

150

696

130

1/11/2014

1/12/2014

976

16,924

17,900

1/10/2014

150

811

190

1/12/2014

1/13/2014

1,151

15,750

17,000

1/11/2014

152

1,406

190

1/13/2014

457

301

1/14/2014

1,748

758

10,794

13,300

1/12/2014

150

1,497

190

1/14/2014

502

390

1/15/2014

1,837

892

12,271

15,000

1/13/2014

373

1,484

190

1/15/2014

663

372

1/16/2014

2,047

1,035

9,818

12,900

1/14/2014

500

1,504

190

1/16/2014

585

230

1/17/2014

2,194

815

7,891

10,900

1/15/2014

500

1,505

190

1/17/2014

683

1/18/2014

2,195

772

6,793

9,760

1/16/2014

507

1,507

190

1/18/2014

703

1/19/2014

2,204

703

6,103

9,010

1/17/2014

695

1,502

190

1/19/2014

676

337

1/20/2014

2,387

1,013

5,240

8,640

1/18/2014

699

1,497

190

1/20/2014

547

851

1/21/2014

2,386

1,398

4,616

8,400

Tables 1, 3–11, and 13–20 37

Col. 1 12/24/2013

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

1/19/2014

698

1,496

178

1/21/2014

676

851

1/22/2014

2,372

1,527

3,601

7,500

1/20/2014

698

1,499

190

1/22/2014

543

851

1/23/2014

2,387

1,394

3,039

6,820

1/21/2014

698

1,497

190

1/23/2014

697

851

1/24/2014

2,385

1,548

3,407

7,340

1/22/2014

699

1,496

190

1/24/2014

432

851

1/25/2014

2,385

1,283

3,292

6,960

1/23/2014

699

1,499

190

1/25/2014

335

851

1/26/2014

2,388

1,186

3,226

6,800

1/24/2014

699

1,497

190

1/26/2014

294

851

1/27/2014

2,386

1,145

2,719

6,250

1/25/2014

698

1,496

175

1/27/2014

484

851

1/28/2014

2,369

1,335

2,166

5,870

1/26/2014

699

1,490

114

1/28/2014

759

851

1/29/2014

2,303

1,610

1,747

5,660

1/27/2014

701

1,497

1/29/2014

587

656

1/30/2014

2,272

1,243

1,885

5,400

1/28/2014

699

1,505

1/30/2014

213

1/31/2014

2,278

254

2,338

4,870

1/29/2014

696

1499

1/31/2014

2/1/2014

2,269

2,537

4,850

1/30/2014

509

1457

2/1/2014

2/2/2014

2,040

2,320

4,360

1/31/2014

500

897

2/2/2014

2/3/2014

1,471

2,332

3,810

2/1/2014

500

794

2/3/2014

2/4/2014

1,368

2,172

3,540

2/2/2014

501

758

2/4/2014

2/5/2014

1,333

1,924

3,320

2/3/2014

467

619

2/5/2014

328

2/6/2014

1,160

328

1,862

3,350

2/4/2014

206

314

2/6/2014

251

195

2/7/2014

594

446

2,130

3,170

2/5/2014

186

257

2/7/2014

453

177

2/8/2014

517

630

2,073

3,220

2/6/2014

150

226

2/8/2014

288

2/9/2014

450

288

1,962

2,700

2/7/2014

150

229

2/9/2014

328

142

2/10/2014

453

470

1,887

2,810

2/8/2014

150

229

2/10/2014

524

337

2/11/2014

453

861

1,456

2,770

2/9/2014

150

226

2/11/2014

837

532

2/12/2014

450

1,369

781

2,600

2/10/2014

152

227

2/12/2014

740

514

2/13/2014

453

1,254

633

2,340

2/11/2014

150

226

2/13/2014

757

266

2/14/2014

450

1,023

727

2,200

2/12/2014

149

224

2/14/2014

651

2/15/2014

447

722

1,851

3,020

2/13/2014

149

241

2/15/2014

742

2/16/2014

464

813

2,073

3,350

38 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

149

410

2/16/2014

547

142

2/17/2014

633

689

1,948

3,270

2/15/2014

149

647

2/17/2014

516

301

2/18/2014

870

817

2,013

3,700

2/16/2014

150

760

2/18/2014

885

2/19/2014

984

974

2,242

4,200

2/17/2014

150

764

2/19/2014

1,070

2/20/2014

988

1,070

2,042

4,100

2/18/2014

150

761

2/20/2014

1,091

2/21/2014

985

1,091

2,124

4,200

2/19/2014

150

769

2/21/2014

459

2/22/2014

993

494

2,513

4,000

2/20/2014

150

777

2/22/2014

412

2/23/2014

1,001

412

3,137

4,550

2/21/2014

150

778

2/23/2014

631

2/24/2014

1,002

631

3,427

5,060

2/22/2014

150

777

2/24/2014

437

106

2/25/2014

1,001

543

3,256

4,800

2/23/2014

150

774

2/25/2014

424

248

2/26/2014

998

672

2,680

4,350

2/24/2014

150

775

2/26/2014

362

461

2/27/2014

999

823

2,448

4,270

2/25/2014

150

775

2/27/2014

646

372

2/28/2014

999

1,018

2,513

4,530

2/26/2014

150

774

2/28/2014

246

160

3/1/2014

998

406

2,046

3,450

2/27/2014

150

829

3/1/2014

333

3/2/2014

1,053

404

2,183

3,640

2/28/2014

150

919

3/2/2014

310

160

3/3/2014

1,143

470

2,207

3,820

3/1/2014

150

919

3/3/2014

407

124

3/4/2014

1,143

531

1,986

3,660

3/2/2014

150

916

3/4/2014

3/5/2014

1,140

102

1,958

3,200

3/3/2014

150

924

3/5/2014

3/6/2014

1,148

1,742

2,950

3/4/2014

150

925

3/6/2014

3/7/2014

1,149

1,691

2,840

3/5/2014

150

919

3/7/2014

3/8/2014

1,143

1,717

2,860

3/6/2014

150

927

3/8/2014

3/9/2014

1,151

1,769

2,920

3/7/2014

150

925

3/9/2014

3/10/2014

1,146

1,784

2,930

3/8/2014

144

888

3/10/2014

3/11/2014

1,100

1,920

3,020

3/9/2014

141

758

3/11/2014

3/12/2014

955

2,845

3,800

3/10/2014

102

566

3/12/2014

177

3/13/2014

725

259

5,036

6,020

3/11/2014

104

415

3/13/2014

264

426

3/14/2014

572

690

5,358

6,620

Tables 1, 3–11, and 13–20 39

Col. 1 2/14/2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

3/12/2014

322

3/14/2014

177

3/15/2014

474

177

4,399

5,050

3/13/2014

101

286

3/15/2014

3/16/2014

443

4,657

5,100

3/14/2014

101

230

3/16/2014

3/17/2014

387

4,348

4,770

3/15/2014

101

167

3/17/2014

248

3/18/2014

324

248

3,748

4,320

3/16/2014

101

153

3/18/2014

124

3/19/2014

310

124

3,526

3,960

3/17/2014

101

153

3/19/2014

3/20/2014

310

4,340

4,650

3/18/2014

101

150

3/20/2014

3/21/2014

307

5,853

6,160

3/19/2014

101

150

3/21/2014

3/22/2014

307

6,013

6,320

3/20/2014

101

150

3/22/2014

3/23/2014

307

6,643

6,950

3/21/2014

101

150

3/23/2014

177

3/24/2014

307

177

5,816

6,300

3/22/2014

101

150

3/24/2014

230

3/25/2014

307

230

4,733

5,270

3/23/2014

101

150

3/25/2014

266

3/26/2014

307

266

4,147

4,720

3/24/2014

101

150

3/26/2014

266

3/27/2014

307

332

3,671

4,310

3/25/2014

101

150

3/27/2014

124

3/28/2014

307

124

3,379

3,810

3/26/2014

101

149

3/28/2014

3/29/2014

306

4,514

4,820

3/27/2014

101

152

3/29/2014

260

3/30/2014

309

260

15,231

15,800

3/28/2014

101

150

3/30/2014

908

3/31/2014

307

979

24,414

25,700

3/29/2014

101

150

3/31/2014

616

284

4/1/2014

307

900

18,293

19,500

3/30/2014

101

150

4/1/2014

520

709

4/2/2014

307

1,229

14,564

16,100

3/31/2014

101

266

4/2/2014

471

851

4/3/2014

423

1,322

12,955

14,700

4/1/2014

101

396

4/3/2014

529

851

4/4/2014

553

1,380

11,667

13,600

4/2/2014

101

398

4/4/2014

382

851

4/5/2014

555

1,233

11,712

13,500

4/3/2014

101

401

4/5/2014

851

4/6/2014

558

851

10,891

12,300

4/4/2014

101

416

4/6/2014

851

4/7/2014

591

915

9,094

10,600

4/5/2014

141

466

4/7/2014

422

851

4/8/2014

683

1,273

8,544

10,500

4/6/2014

150

688

4/8/2014

387

851

4/9/2014

914

1,238

10,248

12,400

40 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

150

1,496

4/9/2014

1,246

851

4/10/2014

1,722

2,097

8,381

12,200

4/8/2014

150

1,497

4/10/2014

1,238

851

4/11/2014

1,723

2,089

6,988

10,800

4/9/2014

150

1,496

4/11/2014

635

851

4/12/2014

1,722

1,486

7,092

10,300

4/10/2014

150

1,496

4/12/2014

851

4/13/2014

1,722

851

7,147

9,720

4/11/2014

150

1,488

4/13/2014

453

851

4/14/2014

1,714

1,304

6,622

9,640

4/12/2014

150

1,494

4/14/2014

1,018

798

4/15/2014

1,720

1,816

6,564

10,100

4/13/2014

234

1,494

4/15/2014

1,221

585

4/16/2014

1,804

1,806

20,890

24,500

4/14/2014

483

1,497

4/16/2014

1,422

621

4/17/2014

2,056

2,043

16,401

20,500

4/15/2014

630

1,504

4/17/2014

1,417

266

4/18/2014

2,210

1,683

13,207

17,100

4/16/2014

702

1,508

4/18/2014

534

4/19/2014

2,286

534

10,880

13,700

4/17/2014

699

1,504

4/19/2014

4/20/2014

2,279

9,321

11,600

4/18/2014

699

1,490

4/20/2014

362

4/21/2014

2,265

362

7,873

10,500

4/19/2014

699

1,491

4/21/2014

591

4/22/2014

2,266

591

6,303

9,160

4/20/2014

699

1,491

4/22/2014

433

4/23/2014

2,266

468

5,506

8,240

4/21/2014

699

1,496

4/23/2014

171

248

4/24/2014

2,271

419

5,080

7,770

4/22/2014

699

1,497

4/24/2014

429

230

4/25/2014

2,272

659

4,229

7,160

4/23/2014

702

1,499

4/25/2014

301

4/26/2014

2,277

602

3,511

6,390

4/24/2014

668

1,426

4/26/2014

4/27/2014

2,170

3,467

5,690

4/25/2014

571

1,078

4/27/2014

197

124

4/28/2014

1,725

321

3,534

5,580

4/26/2014

521

769

4/28/2014

1,064

390

4/29/2014

1,366

1,454

3,360

6,180

4/27/2014

501

705

4/29/2014

1,422

851

4/30/2014

1,282

2,273

4,235

7,790

4/28/2014

500

705

4/30/2014

1,426

762

5/1/2014

1,281

2,188

12,231

15,700

4/29/2014

500

705

5/1/2014

1,619

674

5/2/2014

1,284

2,293

11,923

15,500

4/30/2014

500

705

5/2/2014

384

319

5/3/2014

1,295

703

8,402

10,400

5/1/2014

452

705

5/3/2014

230

5/4/2014

1,247

230

7,083

8,560

5/2/2014

436

705

5/4/2014

106

213

5/5/2014

1,231

319

5,990

7,540

Tables 1, 3–11, and 13–20 41

Col. 1 4/7/2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

5/3/2014

128

705

5/5/2014

117

284

5/6/2014

923

401

5,396

6,720

5/4/2014

101

605

5/6/2014

148

372

5/7/2014

796

520

4,934

6,250

5/5/2014

101

404

5/7/2014

224

301

5/8/2014

595

525

4,560

5,680

5/6/2014

101

404

5/8/2014

230

337

5/9/2014

595

567

4,728

5,890

5/7/2014

101

404

5/9/2014

277

390

5/10/2014

595

667

5,458

6,720

5/8/2014

101

419

101

5/10/2014

390

5/11/2014

621

390

5,169

6,180

5/9/2014

124

456

101

5/11/2014

390

5/12/2014

681

390

4,949

6,020

5/10/2014

149

478

101

5/12/2014

307

195

5/13/2014

728

502

4,280

5,510

5/11/2014

150

478

101

5/13/2014

411

5/14/2014

729

482

3,979

5,190

5/12/2014

150

478

5/14/2014

672

106

5/15/2014

725

778

3,627

5,130

5/13/2014

144

435

5/15/2014

1,225

426

5/16/2014

669

1,651

4,140

6,460

5/14/2014

101

405

5/16/2014

457

426

5/17/2014

596

883

34,621

36,100

5/15/2014

101

348

5/17/2014

1,190

851

5/18/2014

539

2,041

26,020

28,600

5/16/2014

101

161

5/18/2014

1,464

496

5/19/2014

358

1,960

17,682

20,000

5/17/2014

127

430

101

5/19/2014

1,526

674

5/20/2014

658

2,200

12,542

15,400

5/18/2014

150

231

101

5/20/2014

1,653

709

5/21/2014

482

2,362

10,256

13,100

5/19/2014

150

478

101

5/21/2014

1,417

674

5/22/2014

729

2,091

8,580

11,400

5/20/2014

150

506

101

5/22/2014

1,495

621

5/23/2014

757

2,116

8,527

11400

5/21/2014

150

518

101

5/23/2014

606

160

5/24/2014

769

766

7,235

8,770

5/22/2014

150

523

101

5/24/2014

5/25/2014

774

6,597

7,460

5/23/2014

150

526

101

5/25/2014

124

5/26/2014

777

124

5,639

6,540

5/24/2014

150

526

101

5/26/2014

124

5/27/2014

777

188

4,905

5,870

5/25/2014

150

526

101

5/27/2014

408

248

5/28/2014

777

656

4,157

5,590

5/26/2014

150

526

101

5/28/2014

633

124

5/29/2014

777

757

3,506

5,040

5/27/2014

150

526

101

5/29/2014

1,049

160

5/30/2014

777

1,209

3,054

5,040

5/28/2014

150

526

5/30/2014

426

5/31/2014

767

479

2,554

3,800

42 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Col. 1

Col. 2

Col. 3

Col. 4

5/29/2014

141

430

5/31/2014

5/30/2014

139

438

110

5/31/2014

139

504

110

6/1/2014

139

504

6/2/2014

139

6/3/2014

6/4/2014

6/5/2014

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

6/1/2014

668

2,443

3,200

6/1/2014

6/2/2014

687

2,188

2,970

6/2/2014

409

6/3/2014

753

462

2,105

3,320

110

6/3/2014

467

6/4/2014

753

538

2,099

3,390

503

110

6/4/2014

720

6/5/2014

752

791

2,597

4,140

139

504

110

6/5/2014

691

6/6/2014

753

780

2,547

4,080

139

504

110

6/6/2014

112

6/7/2014

753

201

2,276

3,230

139

503

110

6/7/2014

6/8/2014

752

1,970

2,740

6/6/2014

139

490

110

6/8/2014

269

6/9/2014

739

269

1,832

2,840

6/7/2014

139

495

110

6/9/2014

469

6/10/2014

744

469

1,947

3,160

6/8/2014

139

501

110

6/10/2014

384

6/11/2014

750

455

2,025

3,230

6/9/2014

139

498

110

6/11/2014

426

6/12/2014

747

461

1,972

3,180

6/10/2014

139

500

110

6/12/2014

476

6/13/2014

749

547

2,774

4,070

6/11/2014

139

498

110

6/13/2014

323

124

6/14/2014

747

447

13,806

15,000

6/12/2014

139

498

110

6/14/2014

236

177

6/15/2014

747

413

10,740

11,900

6/13/2014

139

501

110

6/15/2014

712

248

6/16/2014

750

960

6,330

8,040

6/14/2014

139

500

110

6/16/2014

548

124

6/17/2014

749

672

4,739

6,160

6/15/2014

139

501

110

6/17/2014

1,313

6/18/2014

750

1,384

3,866

6,000

6/16/2014

139

501

110

6/18/2014

775

284

6/19/2014

750

1,059

3,761

5,570

6/17/2014

139

503

110

6/19/2014

305

284

6/20/2014

752

589

3,649

4,990

6/18/2014

139

503

110

6/20/2014

421

6/21/2014

752

510

2,858

4,120

6/19/2014

139

503

110

6/21/2014

214

6/22/2014

752

214

2,554

3,520

6/20/2014

139

503

110

6/22/2014

302

6/23/2014

752

302

2,326

3,380

6/21/2014

139

503

110

6/23/2014

394

6/24/2014

752

394

2,174

3,320

6/22/2014

139

500

110

6/24/2014

336

6/25/2014

749

336

2,065

3,150

6/23/2014

139

501

110

6/25/2014

473

6/26/2014

750

473

5,997

7,220

Tables 1, 3–11, and 13–20 43

Col. 5

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

6/24/2014

139

501

110

6/26/2014

369

106

6/27/2014

750

475

10,275

11,500

6/25/2014

139

503

110

6/27/2014

279

248

6/28/2014

752

527

6,761

8,040

6/26/2014

139

503

110

6/28/2014

321

177

6/29/2014

752

498

4,810

6,060

6/27/2014

139

503

110

6/29/2014

393

106

6/30/2014

752

499

3,659

4,910

6/28/2014

139

503

110

6/30/2014

299

7/1/2014

752

388

3,250

4,390

6/29/2014

144

503

110

7/1/2014

446

248

7/2/2014

757

694

2,989

4,440

6/30/2014

232

503

110

7/2/2014

478

284

7/3/2014

845

762

6,013

7,620

7/1/2014

149

503

110

7/3/2014

399

426

7/4/2014

762

825

12,113

13,700

7/2/2014

142

503

110

7/4/2014

392

426

7/5/2014

755

818

11,327

12,900

7/3/2014

139

504

110

7/5/2014

272

426

7/6/2014

753

698

6,649

8,100

7/4/2014

139

504

110

7/6/2014

328

426

7/7/2014

753

754

4,553

6,060

7/5/2014

139

504

116

7/7/2014

439

426

7/8/2014

759

865

3,756

5,380

7/6/2014

155

565

139

7/8/2014

510

266

7/9/2014

859

776

4,055

5,690

7/7/2014

487

600

139

7/9/2014

300

124

7/10/2014

1,226

424

4,530

6,180

7/8/2014

500

597

139

7/10/2014

314

213

7/11/2014

1,236

527

3,477

5,240

7/9/2014

500

597

139

7/11/2014

341

213

7/12/2014

1,236

554

2,880

4,670

7/10/2014

500

606

139

7/12/2014

291

248

7/13/2014

1,245

539

2,526

4,310

7/11/2014

500

605

139

7/13/2014

376

248

7/14/2014

1,244

624

4,052

5,920

7/12/2014

500

600

141

7/14/2014

324

301

7/15/2014

1,241

625

8,334

10,200

7/13/2014

500

603

190

7/15/2014

246

266

7/16/2014

1,293

512

7,455

9,260

7/14/2014

589

602

190

7/16/2014

282

426

7/17/2014

1,381

708

9,011

11,100

7/15/2014

684

603

190

7/17/2014

277

426

7/18/2014

1,477

703

5,930

8,110

7/16/2014

699

603

190

7/18/2014

388

426

7/19/2014

1,492

814

4,234

6,540

7/17/2014

701

602

190

7/19/2014

265

266

7/20/2014

1,493

531

3,416

5,440

7/18/2014

701

602

190

7/20/2014

303

248

7/21/2014

1,493

551

2,846

4,890

7/19/2014

698

602

190

7/21/2014

297

213

7/22/2014

1,490

510

2,510

4,510

44 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

701

600

190

7/22/2014

360

142

7/23/2014

1,491

502

2,307

4,300

7/21/2014

701

602

189

7/23/2014

369

266

7/24/2014

1,492

635

2,023

4,150

7/22/2014

699

602

190

7/24/2014

212

266

7/25/2014

1,491

478

2,591

4,560

7/23/2014

699

600

190

7/25/2014

383

266

7/26/2014

1,489

649

1,952

4,090

7/24/2014

699

600

190

7/26/2014

277

213

7/27/2014

1,489

490

1,551

3,530

7/25/2014

520

600

190

7/27/2014

225

195

7/28/2014

1,310

420

1,640

3,370

7/26/2014

498

600

190

7/28/2014

123

195

7/29/2014

1,288

318

1,704

3,310

7/27/2014

500

599

190

7/29/2014

107

142

7/30/2014

1,289

249

1,602

3,140

7/28/2014

500

600

190

7/30/2014

142

7/31/2014

1,290

219

1,441

2,950

7/29/2014

498

600

190

7/31/2014

217

142

8/1/2014

1,288

359

1,333

2,980

7/30/2014

498

597

190

8/1/2014

360

8/2/2014

1,285

431

1,554

3,270

7/31/2014

309

599

190

8/2/2014

8/3/2014

1,098

138

1,294

2,530

8/1/2014

150

597

190

8/3/2014

140

8/4/2014

937

211

1,332

2,480

8/2/2014

150

599

190

8/4/2014

280

106

8/5/2014

939

386

1,265

2,590

8/3/2014

150

600

190

8/5/2014

257

106

8/6/2014

940

363

1,207

2,510

8/4/2014

150

600

190

8/6/2014

230

e142

8/7/2014

940

e372

e1,198

2,510

8/5/2014

168

150

600

190

8/7/2014

165

8/8/2014

168

772

236

1,214

2,390

8/6/2014

184

150

597

189

8/8/2014

370

142

8/9/2014

184

752

512

1,082

2,530

8/7/2014

170

150

599

190

8/9/2014

232

8/10/2014

170

769

250

1,011

2,200

8/8/2014

417

150

599

190

8/10/2014

216

8/11/2014

417

522

251

920

2,110

8/9/2014

527

150

600

190

8/11/2014

154

160

8/12/2014

527

413

314

966

2,220

8/10/2014

240

150

602

190

8/12/2014

266

8/13/2014

240

702

266

1,052

2,260

8/11/2014

149

600

190

8/13/2014

230

8/14/2014

939

262

1,349

2,550

8/12/2014

149

600

190

8/14/2014

8/15/2014

939

102

1,289

2,330

8/13/2014

374

149

599

184

8/15/2014

8/16/2014

374

558

1,048

1,980

8/14/2014

401

149

599

150

8/16/2014

8/17/2014

401

497

922

1,820

Tables 1, 3–11, and 13–20 45

Col. 1 7/20/2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

8/15/2014

150

596

150

8/17/2014

8/18/2014

150

746

828

1,750

8/16/2014

514

149

597

150

8/18/2014

179

8/19/2014

514

382

179

805

1,880

8/17/2014

960

150

662

150

8/19/2014

202

8/20/2014

962

220

848

2,030

8/18/2014

997

150

676

150

8/20/2014

225

8/21/2014

976

225

839

2,040

8/19/2014

1,018

150

718

150

8/21/2014

225

8/22/2014

1,018

243

3,099

4,360

8/20/2014

987

150

685

150

8/22/2014

292

8/23/2014

985

292

2,323

3,600

8/21/2014

1,151

150

851

150

8/23/2014

195

8/24/2014

1,151

200

1,449

2,800

8/22/2014

150

605

150

8/24/2014

208

8/25/2014

905

208

1,257

2,370

8/23/2014

150

605

150

8/25/2014

311

8/26/2014

905

400

1,105

2,410

8/24/2014

150

602

150

8/26/2014

440

177

8/27/2014

902

617

941

2,460

8/25/2014

150

606

150

8/27/2014

501

8/28/2014

829

590

844

2,340

8/26/2014

295

150

603

147

8/28/2014

308

8/29/2014

295

605

326

764

1,990

8/27/2014

371

150

603

139

8/29/2014

308

8/30/2014

371

521

326

682

1,900

8/28/2014

832

150

603

139

8/30/2014

442

8/31/2014

832

460

708

2,060

8/29/2014

1,041

150

750

139

8/31/2014

152

9/1/2014

1,039

205

776

2,020

8/30/2014

1,102

150

826

127

9/1/2014

140

213

9/2/2014

1,103

353

734

2,190

8/31/2014

977

150

512

101

9/2/2014

303

230

9/3/2014

763

533

734

2,030

9/1/2014

888

150

637

101

9/3/2014

387

213

9/4/2014

888

600

812

2,300

9/2/2014

867

150

625

9/4/2014

300

142

9/5/2014

865

442

833

2,140

9/3/2014

288

139

467

9/5/2014

386

248

9/6/2014

288

408

634

810

2,140

9/4/2014

667

139

441

9/6/2014

393

9/7/2014

670

393

797

1,860

9/5/2014

575

139

404

9/7/2014

187

9/8/2014

575

205

682

1,520

9/6/2014

585

139

402

9/8/2014

191

9/9/2014

585

244

605

1,480

9/7/2014

759

139

532

9/9/2014

173

106

9/10/2014

761

279

580

1,620

9/8/2014

931

139

701

9/10/2014

212

124

9/11/2014

930

336

554

1,820

9/9/2014

1,004

139

775

9/11/2014

9/12/2014

1,004

102

634

1,740

46 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

1,003

139

973

9/12/2014

9/13/2014

1,002

200

596

1,830

200

9/11/2014

1,017

139

992

9/13/2014

9/14/2014

1,021

200

709

1,930

200

9/12/2014

1,262

139

1,233

9/14/2014

9/15/2014

1,262

200

678

2,140

200

9/13/2014

1,250

139

1,118

9/15/2014

9/16/2014

1,247

100

643

1,990

100

9/14/2014

1,179

139

1,148

9/16/2014

201

9/17/2014

1,177

200

201

602

2,180

200

9/15/2014

1,100

133

1,176

9/17/2014

221

9/18/2014

1,099

300

221

584

2,210

300

9/16/2014

1,062

101

1,170

9/18/2014

186

9/19/2014

1,061

300

186

523

2,070

300

9/17/2014

1,089

101

896

9/19/2014

207

9/20/2014

1,087

207

536

1,830

9/18/2014

1,105

101

1,023

9/20/2014

106

9/21/2014

1,104

100

123

553

1,890

100

9/19/2014

1,287

101

1,287

9/21/2014

9/22/2014

1,278

200

502

1,980

200

9/20/2014

1,071

101

1,134

9/22/2014

221

9/23/2014

1,075

250

221

484

2,030

250

9/21/2014

1,081

101

1,146

9/23/2014

298

9/24/2014

1,087

250

298

475

2,110

250

9/22/2014

1,055

101

1,109

9/24/2014

237

9/25/2014

1,050

250

237

463

2,000

250

9/23/2014

1,073

101

1,126

9/25/2014

237

9/26/2014

1,067

250

237

416

1,970

250

9/24/2014

990

101

804

9/26/2014

267

9/27/2014

995

356

479

1,830

9/25/2014

1,029

101

845

9/27/2014

318

9/28/2014

1,036

318

436

1,790

9/26/2014

1,108

101

1,069

9/28/2014

171

9/29/2014

1,110

150

206

434

1,900

150

9/27/2014

1,176

101

1,132

9/29/2014

142

9/30/2014

1,173

150

230

487

2,040

150

9/28/2014

1,296

101

1,309

9/30/2014

142

10/1/2014

1,300

200

142

398

2,040

200

9/29/2014

1,258

101

1,278

10/1/2014

142

10/2/2014

1,258

200

142

430

2,030

200

9/30/2014

1,124

101

1,067

10/2/2014

142

10/3/2014

1,124

100

142

444

1,810

100

10/1/2014

1,053

101

947

10/3/2014

301

10/4/2014

1,054

301

505

1,910

10/2/2014

966

101

808

10/4/2014

10/5/2014

965

607

1,590

10/3/2014

774

101

616

10/5/2014

10/6/2014

773

657

1,430

10/4/2014

976

101

825

10/6/2014

10/7/2014

982

564

1,580

10/5/2014

1,180

101

1,024

10/7/2014

10/8/2014

1,181

569

1,750

Tables 1, 3–11, and 13–20 47

Col. 1 9/10/2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 1

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

10/6/2014

1,201

101

1,041

10/8/2014

10/9/2014

1,198

532

1,730

10/7/2014

1,193

101

1,086

10/9/2014

10/10/2014

1,193

477

1,720

10/8/2014

1,222

101

1,170

10/10/2014

10/11/2014

1,227

100

473

1,800

100

10/9/2014

1,267

101

1,210

10/11/2014

10/12/2014

1,267

100

443

1,810

100

10/10/2014

1,278

101

1,170

10/12/2014

160

10/13/2014

1,277

160

383

1,870

10/11/2014

1,191

101

1,038

10/13/2014

106

10/14/2014

1,195

106

419

1,720

10/12/2014

1,300

101

1,140

10/14/2014

10/15/2014

1,297

423

1,720

10/13/2014

1,263

101

1,106

10/15/2014

10/16/2014

1,263

2,477

3,740

10/14/2014

1,055

101

899

10/16/2014

10/17/2014

1,056

7,848

8,950

10/15/2014

586

101

430

10/17/2014

10/18/2014

587

3,943

4,530

10/16/2014

101

149

10/18/2014

177

10/19/2014

306

185

2,589

3,080

10/17/2014

101

152

10/19/2014

10/20/2014

309

1,920

2,300

10/18/2014

101

150

10/20/2014

10/21/2014

307

1,581

1,890

10/19/2014

101

150

10/21/2014

10/22/2014

307

1,425

1,780

10/20/2014

101

150

10/22/2014

10/23/2014

307

1,593

1,930

10/21/2014

101

150

10/23/2014

10/24/2014

307

1,817

2,140

10/22/2014

101

149

10/24/2014

10/25/2014

306

1,884

2,190

10/23/2014

272

101

150

10/25/2014

10/26/2014

272

1,743

2,050

10/24/2014

101

152

10/26/2014

10/27/2014

309

1,651

1,960

10/25/2014

101

152

10/27/2014

10/28/2014

309

1,605

1,920

10/26/2014

101

152

10/28/2014

10/29/2014

309

1,503

1,900

10/27/2014

101

152

10/29/2014

10/30/2014

309

1,421

1,730

10/28/2014

324

101

169

10/30/2014

10/31/2014

326

1,414

1,740

10/29/2014

101

147

10/31/2014

11/1/2014

304

1,356

1,660

10/30/2014

350

101

196

11/1/2014

11/2/2014

353

1,257

1,610

10/31/2014

510

101

353

11/2/2014

124

11/3/2014

513

124

1,163

1,800

48 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Rio Reservoir

Date

New York City reservoirs Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 2

Col. 3

Col. 4

Col. 5

Col. 6

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

592

105

435

11/3/2014

106

11/4/2014

596

106

1,068

1,770

11/2/2014

644

101

517

11/4/2014

106

11/5/2014

674

187

909

1,770

11/3/2014

725

101

585

11/5/2014

11/6/2014

742

988

1,730

11/4/2014

101

153

11/6/2014

11/7/2014

310

1,080

1,390

11/5/2014

651

101

492

11/7/2014

11/8/2014

649

893

1,550

11/6/2014

832

101

736

11/8/2014

11/9/2014

833

947

1,840

11/7/2014

958

101

862

11/9/2014

11/10/2014

959

911

1,930

11/8/2014

1,030

101

937

11/10/2014

11/11/2014

1,034

846

1,940

11/9/2014

1,021

101

972

11/11/2014

124

11/12/2014

1,019

110

178

893

2,200

110

11/10/2014

1,081

101

1,072

11/12/2014

230

11/13/2014

1,079

150

230

801

2,260

150

11/11/2014

994

101

1,078

11/13/2014

106

11/14/2014

985

250

106

809

2,150

250

11/12/2014

1,081

101

1,074

11/14/2014

11/15/2014

1,081

150

699

1,930

150

11/13/2014

894

101

794

11/15/2014

11/16/2014

901

729

1,680

11/14/2014

894

101

726

11/16/2014

11/17/2014

883

807

1,690

11/15/2014

902

101

746

11/17/2014

11/18/2014

903

1,047

1,950

11/16/2014

1,080

101

917

11/18/2014

11/19/2014

1,074

1,636

2,710

11/17/2014

1,131

101

973

11/19/2014

11/20/2014

1,130

1,370

2,500

11/18/2014

1,067

101

911

11/20/2014

11/21/2014

1,068

1,132

2,200

11/19/2014

732

101

579

11/21/2014

11/22/2014

736

957

1,730

11/20/2014

785

101

628

11/22/2014

11/23/2014

785

1,015

1,800

11/21/2014

797

101

628

11/23/2014

11/24/2014

785

1,325

2,110

11/22/2014

544

101

391

11/24/2014

11/25/2014

548

1,832

2,380

11/23/2014

556

101

402

11/25/2014

11/26/2014

559

2,631

3,190

11/24/2014

370

101

218

11/26/2014

11/27/2014

375

2,405

2,780

11/25/2014

101

119

11/27/2014

11/28/2014

276

2,234

2,510

11/26/2014

101

11/28/2014

11/29/2014

258

2,022

2,280

Tables 1, 3–11, and 13–20 49

Col. 1 11/1/2014

Controlled releases from powerplant reservoirs

Segregation of flow, Delaware River at Montague, New Jersey

Directed

Date

Controlled releases Amount

Pepacton

Cannonsville

Neversink

Date

Lake Wallenpaupack

Col. 1

Col. 2

Col. 3

Col. 4

11/27/2014

101

Dec. 2013

4,117

6,202

2,130

—

Jan. 2014

12,522

31,949

4,780

—

15,974

Feb. 2014

6,563

17,190

2,072

—

13,493

Mar. 2014

3,703

14,566

1,923

—

2,950

Apr. 2014

11,104

32,747

2,158

—

May 2014

5,818

15,547

2,944

June 2014

4,172

14,899

July 2014

14,454

17,817

Aug. 2014

9,833

5,500

Sept. 2014

29,621

Oct. 2014

20,779

Nov. 2014

20,221

Rio Reservoir Col. 6

Directed

Other

Powerplants

Computed uncontrolled

Total

IERQ bank releases

Col. 7

Col. 8

Col. 9

Col. 10

Col. 11

Col. 12

11/30/2014

258

1,822

2,080

5,869

—

12,449

5,889

149,302

167,640

15,815

—

49,251

31,789

197,530

278,570

4,059

—

25,825

17,552

59,063

102,440

2,924

—

20,192

5,874

143,674

169,740

17,545

15,707

—

46,009

33,252

268,559

347,820

—

19,534

10,993

—

24,309

30,527

252,724

307,560

3,287

—

12,197

2,730

—

22,358

14,927

119,145

156,430

4,900

—

9,700

8,462

—

37,171

18,162

132,717

188,050

19,199

5,258

—

6,405

2,360

—

9,812

20,145

8,765

36,528

75,250

3,763

26,453

2,808

—

5,538

1,861

—

29,402

3,612

7,399

18,151

58,580

3,100

3,131

20,141

1,793

—

278

1,259

—

20,795

4,270

1,537

43,738

70,340

850

3,034

17,843

1,683

—

180

796

—

20,264

2,296

976

37,584

61,120

890

11/29/2014

Col. 5

Date

New York City reservoirs

Monthly totals

50 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Tables 1, 3–11, and 13–20 51 Table 11. Daily mean discharge, Delaware River at Montague, New Jersey (U.S. Geological Survey site number 01438500), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019d). All values except the year’s total discharge volume are in cubic feet per second (ft3/s). The total volume discharged is given in cubic feet per second for a day ([ft3/s]-d). —, not applicable]

Day 1

Dec. 4,610

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

7,670

15,000

13,910

19,900

16,000

2,960

4,170

2,860

1,990

2,110

1,730

13,670

4,240

6,960

14,880

16,600

15,900

2,760

4,250

3,140

2,160

2,030

1,670

3,740

15,700

14,220

13,800

15,100

10,600

3,120

7,380

2,420

2,010

1,810

1,860

3,450

14,220

13,670

13,800

14,000

8,650

3,190

13,300

2,370

2,270

1,910

1,830

3,390

14,420

13,390

13,350

13,800

7,590

3,950

12,500

2,480

2,110

1,590

1,830

13,040

3,820

7,420

13,480

12,600

6,750

3,880

7,830

2,400

2,110

1,430

1,790

5,770

17,300

13,400

13,020

10,800

6,230

3,030

5,850

2,400

1,830

1,580

1,450

13,070

5,650

12,100

13,210

10,700

5,650

2,540

5,170

2,280

1,500

1,750

1,610

4,680

10,200

12,930

13,290

12,700

5,860

2,650

5,460

2,420

1,470

1,730

1,900

13,370

4,460

7,890

12,670

12,500

6,710

2,960

5,940

2,100

1,610

1,720

2,000

13,760

7,840

12,780

13,460

11,100

6,160

3,030

5,020

2,070

1,800

2,010

13,400

18,300

13,140

14,630

10,500

5,970

2,980

4,460

2,170

1,720

1,810

2,260

13,080

17,400

13,090

16,680

9,920

5,450

3,880

4,090

2,210

1,810

1,870

2,320

12,720

13,600

13,000

17,030

9,840

5,120

15,300

5,670

2,500

1,900

1,720

2,210

12,400

15,500

13,290

16,150

10,300

5,050

12,100

9,840

2,290

2,110

1,720

2,000

12,400

13,200

13,150

5,630

24,900

6,520

7,990

8,980

1,960

3,810

1,740

12,590

11,200

13,250

5,000

20,900

36,700

6,030

10,700

1,810

2,150

8,940

1,750

12,770

9,960

13,410

4,340

17,500

28,900

5,860

7,860

1,730

2,190

4,680

2,020

12,740

9,170

13,590

3,970

14,100

20,500

5,420

6,340

1,860

2,070

3,250

2,780

3,450

8,790

13,880

4,680

11,900

15,800

4,820

5,250

2,000

1,820

2,470

2,560

3,340

8,540

14,240

6,230

10,700

13,300

3,920

4,730

2,010

1,890

2,060

2,260

5,280

17,350

14,470

6,390

9,330

11,600

3,320

4,360

4,290

1,990

1,950

1,790

17,600

16,300

14,630

7,040

8,370

11,500

3,180

4,150

3,540

2,050

2,100

1,870

15,600

15,920

15,080

6,370

7,890

8,770

3,120

4,010

2,750

2,140

2,320

2,180

10,600

15,690

14,950

5,320

7,240

7,380

2,960

4,410

2,340

2,030

2,360

2,450

7,750

15,460

14,470

4,750

6,440

6,420

7,200

3,940

2,370

2,010

2,230

3,250

6,780

15,470

14,270

4,330

5,720

5,730

11,600

3,400

2,420

1,880

2,020

2,840

5,820

15,450

14,260

3,820

5,600

5,430

7,970

3,240

2,300

1,840

1,980

2,580

5,350

15,130

—

4,850

6,220

4,840

5,900

3,180

1,960

1,950

1,970

2,340

10,400

15,110

—

16,100

7,880

4,830

4,700

3,010

1,880

2,100

1,800

2,150

10,500

15,040

—

26,100

—

3,560

—

2,840

2,030

—

1,800

—

Total2

172,140

274,300

105,800

177,190

355,050

309,470

152,320

181,330

73,360

58,470

72,320

63,030

Mean3

5,553

8,848

3,779

5,716

11,835

9,983

5,077

5,849

2,366

1,949

2,333

2,101

1Estimated. 2The year’s total is 1,994,780 cubic feet per second for a day. 3The combined mean is 5,465.2 cubic feet per second.

52 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 13. Daily mean discharge, East Branch Delaware River at Downsville, New York (U.S. Geological Survey site number 01417000), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019a). All values except the year’s total discharge volume are in cubic feet per second (ft3/s). The total volume discharge is given in cubic feet per second for a day ([ft3/s]-d). —, not applicable]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

106

151

577

148

101

453

143

350

204

137

106

151

507

148

101

358

143

206

153

139

106

151

507

148

101

166

144

157

154

133

106

151

332

151

101

165

143

347

154

129

106

150

204

151

117

394

143

423

153

129

106

151

167

151

147

380

143

253

152

129

100

106

150

154

151

147

329

143

333

151

129

106

151

154

151

148

279

143

484

151

129

151

155

147

148

294

143

485

151

129

151

155

115

149

285

143

487

151

129

151

155

148

220

142

487

151

129

151

155

147

158

140

487

151

129

151

202

155

165

150

140

486

151

125

151

493

155

385

119

139

527

150

125

151

498

155

535

105

139

622

151

125

151

498

154

1,160

138

139

675

149

102

151

604

155

2,420

1,730

140

680

147

151

704

155

2,450

2,000

140

681

147

151

704

155

2,000

1,430

140

673

146

151

704

153

1,580

1,020

140

672

145

151

704

149

1,250

712

140

680

143

151

704

147

100

940

571

140

680

143

151

704

147

100

758

504

140

680

139

151

710

147

100

700

442

140

679

139

151

716

147

598

498

151

593

139

151

717

147

544

432

2,080

479

139

151

717

147

101

488

348

2,050

479

139

151

717

147

101

488

238

1,230

479

139

151

717

—

101

489

161

718

480

139

151

717

—

101

488

148

466

479

139

151

677

—

101

—

146

—

410

138

—

Total1

4,299

14,017

5,637

3,538

8,993

14,373

10,085

15,633

4,598

3,386

3,045

2,955

Mean2

138.7

452.2

201.3

114.2

1The year’s total is 100,559 cubic feet per second for a day. 2The combined mean is 275.1 cubic feet per second.

633.1

463.6

336.2

504.3

148.3

112.9

98.0

98.3

Tables 1, 3–11, and 13–20 53 Table 14. Daily mean discharge, West Branch Delaware River at Stilesville, New York (U.S. Geological Survey site number 01425000), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019b). All values except the year’s total discharge volume are in cubic feet per second (ft3/s). The total volume discharge is given in cubic feet per second for a day ([ft3/s]-d). —, not applicable]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

143

235

904

906

261

721

418

463

557

490

1,070

328

150

235

782

910

382

717

454

464

557

604

933

391

154

233

745

910

383

724

456

466

558

584

802

466

156

232

601

917

385

720

456

463

557

444

586

569

160

232

316

923

398

612

455

463

560

420

810

149

162

234

262

917

440

405

456

463

560

388

1,020

455

162

345

232

917

670

417

450

517

557

386

1,040

750

162

652

232

917

1,500

450

453

550

557

489

1,090

883

191

653

232

910

1,500

529

456

551

558

678

1,160

947

232

655

231

801

1,500

639

456

549

562

765

1,200

988

230

772

229

525

1,500

729

456

557

565

985

1,160

1,090

230

1,360

229

387

1,510

724

456

552

567

994

1,040

1,100

232

1,470

229

331

1,500

670

470

565

566

1,220

1,140

1,100

233

1,480

235

289

1,500

567

464

561

560

1,110

1,100

816

234

1,490

368

240

1,520

500

458

559

557

1,140

899

752

232

1,500

597

179

1,940

692

456

557

1,160

437

760

234

1,500

741

161

2,740

3,160

461

557

562

1,160

167

934

235

1,500

744

157

2,860

3,960

458

557

638

889

168

983

235

1,500

738

151

2,670

3,140

456

557

649

1,010

168

940

235

1,500

744

149

2,380

2,770

457

557

698

1,260

168

594

236

1,500

758

147

2,080

2,150

463

557

670

1,130

168

614

242

1,500

762

148

1,840

1,710

463

557

840

1,130

168

622

241

1,500

763

147

1,690

1,520

462

562

567

1,110

168

384

236

1,500

753

148

1,580

1,300

463

557

567

1,110

168

385

235

1,500

750

149

1,450

1,070

464

557

567

797

168

207

235

1,490

751

147

1,100

852

463

557

567

826

168

125

235

1,480

754

149

793

686

463

558

567

1,060

168

100

235

1,490

803

155

718

581

463

558

564

1,130

168

100

238

1,500

—

155

716

498

463

557

569

1,290

180

101

237

1,500

—

180

719

420

463

557

737

1,270

168

101

235

1,460

—

170

—

397

—

557

812

—

197

—

Total1

6,607

34,198

15,485

13,292

40,225

34,030

13,732

16,662

18,529

27,029

18,047

17,734

1,340.8

1,097.7

Mean2

213.1

1,103.2

553.0

428.8

1The year’s total is 255,570 cubic feet per second for a day. 2The combined mean is 700.3 cubic feet per second.

457.7

537.5

597.7

901.0

582.2

591.1

54 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 15. Daily mean discharge, Neversink River at Neversink, New York (U.S. Geological Survey site number 01436000), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019c). All values except the year’s total discharge volume are in cubic feet per second (ft3/s). The total volume discharge is given in cubic feet per second for a day ([ft3/s]-d). —, not applicable]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

133

106

110

179

113

133

111

179

102

130

111

180

130

111

110

179

130

112

109

182

120

111

109

181

129

111

127

178

129

111

137

179

130

102

111

136

179

130

105

111

137

179

170

105

112

137

180

210

105

111

137

179

213

105

113

137

179

214

100

125

186

179

215

112

246

159

213

108

1,310

146

211

1,130

108

492

146

209

690

107

406

147

210

206

108

340

147

210

122

107

290

148

198

189

108

250

151

209

263

108

204

151

208

348

108

180

151

208

300

108

183

151

209

262

108

179

151

208

228

108

179

152

170

202

108

179

152

113

144

108

179

145

—

107

109

179

141

111

—

100

110

179

140

132

—

102

—

179

140

—

Total1

2,388

5,159

2,289

2,041

2,356

5,978

3,300

6,948

5,030

2,776

1,770

1,699

Mean2

77.0

166.4

81.8

65.8

78.3

192.8

110.0

224.1

162.3

92.3

57.2

56.6

1The year’s total is 41,734 cubic feet per second for a day. 2The combined mean 113.7 cubic feet per second.

Tables 1, 3–11, and 13–20 55 Table 16. Daily mean discharge, Delaware River at Trenton, New Jersey (U.S. Geological Survey site number 01463500), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2019f). All values except the year’s total discharge volume are in cubic feet per second (ft3/s). The total volume discharge is given in cubic feet per second for a day ([ft3/s]-d). —, not applicable]

Day

Dec.

9,140

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

18,400

19,350

17,950

43,100

74,900

9,650

8,280

5,300

3,710

3,040

3,390

17,850

34,500

55,700

8,170

7,380

5,230

3,770

3,150

3,380

29,700

40,300

7,760

8,460

5,640

3,440

13,190

3,070 2,930

7,610

14,500

19,200

6,910

13,100

19,100

17,400

6,450

110,200

18,050

16,650

27,500

30,500

7,750

11,600

5,270

3,550

13,260

5,930

19,750

17,850

7,010

26,300

24,900

8,210

19,400

4,740

3,330

3,090

3,150

5,780

113,900

17,400

6,820

24,900

21,200

9,620

17,800

4,490

3,570

3,010

3,250

8,990

119,900

17,350

6,120

22,400

18,200

9,100

12,900

4,390

3,780

2,750

3,290

11,000

121,600

16,950

6,170

21,500

16,500

8,070

10,500

4,210

3,750

2,610

3,140

10,600

117,900

16,650

7,050

21,500

15,600

7,720

9,750

4,120

13,340

2,920

2,770

10,100

115,600

16,300

10,000

14,060

13,040

3,130

2,780

9,110

119,300

15,900

10,200

20,700

15,400

7,140

11,100

14,220

13,000

3,140

3,130

8,190

135,100

15,850

14,600

19,200

13,800

17,020

9,720

13,980

3,070

3,060

3,160

18,440

14,200

13,140

8,570

21,900

14,800

7,630

7,230

40,900

16,200

20,400

18,200

12,900

110,100

3,020

3,150

6,380

34,000

16,500

18,100

17,100

12,300

21,100

8,860

5,300

3,120

3,060

3,470

6,540

31,200

16,750

16,400

20,600

11,300

26,100

12,700

4,610

3,150

3,180

3,510

5,870

28,700

16,700

16,200

35,400

13,100

21,100

15,700

4,490

3,280

3,930

3,300

5,510

24,100

16,600

15,100

43,800

38,900

16,000

14,000

4,040

3,410

7,760

3,510

5,290

20,400

16,700

13,400

35,400

56,300

12,700

15,000

3,920

3,200

12,600

4,110

18,300

16,700

11,800

29,300

42,700

11,600

12,100

3,740

3,310

8,530

3,580

5,560

5,460

16,800

17,400

14,700

23,900

32,700

10,700

10,400

3,380

3,290

6,210

3,560

5,950

15,900

18,350

15,200

20,700

26,100

9,960

9,100

3,410

3,300

5,180

4,130

8,700

114,300

19,500

15,800

19,100

25,700

8,990

8,280

5,530

3,130

4,570

3,750

13,800

112,000

110,400

16,000

17,400

27,400

7,800

7,600

5,720

3,090

4,100

3,420

30,700

110,400

111,100

16,200

15,800

22,900

7,150

7,370

7,050

3,200

3,820

3,370

25,300

110,200

110,900

14,700

14,600

18,800

6,850

7,120

5,820

3,230

3,920

4,270

18,600

110,600

19,800

12,900

14,300

16,400

7,430

6,990

5,050

3,300

3,990

5,100

14,600

110,800

18,700

11,600

13,400

14,600

9,230

6,850

4,320

3,150

3,950

6,340

12,400

110,900

18,050

10,700

12,000

13,100

15,100

7,150

4,110

3,170

3,750

6,590

12,600

110,200

—

10,700

11,300

12,400

11,800

6,430

4,020

3,040

3,510

5,730

17,200

19,950

—

24,400

30,600

11,500

9,630

5,920

3,720

3,000

3,430

5,090

19,500

19,800

—

43,700

—

10,700

—

5,490

3,440

—

3,390

—

Total2

327,000

548,700

220,300

414,390

706,100

761,600

321,180

312,390

141,520

98,860

128,250

113,420

Mean3

10,548.0 17,700.0

7,868.0

13,367.0 23,537.0 24,568.0 10,706.0 10,077.0

4,565.0

3,295.0

4,137.0

3,781.0

1Estimated. 2The year’s total is 4,093,710 cubic feet per second for a day. 3The combined mean is 11,179.0 cubic feet per second.

[Record provided by Kimberly-Clark Chester Operations through written communication with the Delaware River Basin Commission. Concentrations are in milligrams per liter. *, missing data; —, not applicable; max, maximum; min, minimum]

Day

Dec.

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

103

109

294

174

203

148

119

423

254

148

105

126

366

273

203

115

126

490

219

188

119

105

394

176

219

105

316

203

125

109

316

203

188

136

119

115

316

254

188

125

109

340

217

174

136

109

125

366

203

316

105

109

148

423

203

294

160

104

119

160

490

219

366

148

174

105

490

254

455

160

130

119

188

136

455

254

423

188

138

126

174

125

366

316

254

188

151

119

174

125

366

294

203

219

105

366

254

366

188

151

138

203

125

366

219

136

151

138

174

125

301

178

203

125

165

138

188

115

236

136

203

148

151

135

188

115

174

115

188

125

151

138

174

125

136

115

188

148

151

138

188

136

105

160

125

151

125

136

203

148

103

151

138

174

136

148

203

125

103

138

114

174

136

148

219

125

165

126

236

136

148

254

148

109

273

174

160

148

125

—

340

160

148

166

105

—

294

174

136

125

—

105

—

203

125

—

Mean

122

103

165

112

295

181

232

137

Max

126

104

165

138

119

105

340

174

490

316

455

203

Min

136

56 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 17. Daily maximum and minimum chloride concentrations, Delaware River at Chester, Pennsylvania (U.S. Geological Survey site number 01477050), for report year ending November 30, 2014.

Table 18. Daily maximum and minimum specific conductance, Delaware River at Reedy Island Jetty, Delaware (U.S. Geological Survey site number 01482800), for report year ending November 30, 2014. [Data from U.S. Geological Survey (2020f). Specific conductance measurements provided in microsiemens per centimeter at 25 degrees Celsius. *, missing data; —, not applicable; max, maximum; min, minimum]

Day

Dec. Max

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

21,100

9,890

10,000

2,650

12,800

4,600

10,000

2,960

8,270

1,180

5,260

264

7,180

1,230

8,610

3,240

12,400

4,860

14,900

6,770

21,700

13,900

22,000

13,200

21,300

10,500

11,100

2,630

12,800

4,860

9,900

2,920

7,340

897

1,020

264

6,540

1,460

8,000

2,830

12,700

4,800

15,600

7,330

22,400

13,700

22,600

14,200

21,700

10,900

9,930

2,400

12,300

4,850

9,360

3,130

4,990

821

602

353

6,160

1,350

7,430

2,590

13,000

5,240

16,100

7,890

22,600

14,800

24,200

12,900

21,100

11,100

13,800

3,550

12,700

4,560

11,200

3,550

3,620

768

415

326

7,540

1,490

8,140

2,450

13,500

5,390

16,700

7,810

21,400

15,300

21,900

13,000

20,100

11,000

9,690

3,320

11,600

4,660

12,000

3,930

4,290

678

551

301

8,080

1,740

11,600

2,630

14,400

5,770

16,200

8,180

20,500

14,000

22,700

12,800

19,100

10,900

10,200

3,650

9,770

3,760

11,900

4,770

3,570

575

5,110

321

9,510

1,960

11,800

3,130

15,800

6,100

16,200

8,100

19,800

13,800

23,500

13,400

18,800

10,500

4,130

2,070

11,500

3,260

13,900

4,850

4,740

711

6,010

779

11,400

2,160

12,300

2,790

16,500

6,430

16,500

7,480

19,800

12,900

22,200

13,600

18,200

9,940

5,350

1,430

10,700

3,360

14,700

5,640

6,850

1,570

6,520

1,120

13,500

2,860

13,600

2,970

16,900

7,030

17,100

8,770

18,300

12,100

22,500

13,900

17,900

9,650

7,500

1,150

12,300

3,370

12,900

5,430

7,040

1,340

6,920

1,800

13,500

4,460

13,500

2,970

16,300

7,230

18,000

9,790

18,400

11,800

21,400

13,500

16,800

9,330

9,190

1,330

13,100

4,190

14,500

5,320

7,500

1,560

8,490

2,010

12,600

4,050

13,300

3,860

17,100

7,690

17,900

9,740

18,000

11,700

22,200

13,600

15,300

8,490

10,400

2,090

14,300

4,700

14,900

5,150

8,010

1,860

6,940

2,010

13,100

4,150

13,300

4,330

17,300

7,980

17,400

10,100

18,400

11,800

22,500

13,800

14,200

8,010

8,650

1,390

15,700

6,400

17,600

6,340

7,580

1,670

8,260

1,860

13,900

4,810

13,800

4,670

17,300

8,920

16,900

9,890

19,000

12,100

22,600

14,000

15,900

7,160

6,570

1,140

20,200

9,830

17,100

4,430

7,580

1,700

8,260

2,000

12,700

4,820

13,600

5,010

16,100

8,200

17,600

10,100

18,300

12,100

23,100

13,800

16,400

6,940

7,130

933

20,200

8,310

13,300

4,020

7,640

1,880

9,000

2,510

12,100

4,000

12,400

4,710

15,400

7,840

17,800

10,100

18,100

12,200

23,200

14,600

18,500

8,430

6,380

792

14,400

8,220

12,100

3,970

6,060

1,430

8,950

2,670

10,300

3,520

12,000

4,350

14,700

8,040

17,300

10,400

17,200

12,600

23,900

15,000

13,300

6,950

5,150

773

15,500

7,330

11,600

3,720

2,190

622

8,250

2,680

9,800

3,350

11,100

4,060

14,800

7,770

17,200

10,600

17,200

12,000

24,200

14,800

6,840

727

14,300

6,750

12,100

4,090

4,560

695

5,990

1,780

9,760

3,120

10,100

3,880

14,600

7,960

18,600

10,400

17,800

11,700

24,600

16,300

3,800

746

14,300

6,860

12,900

4,590

4,440

598

5,110

1,220

9,220

3,000

9,500

3,660

15,400

7,800

18,200

10,700

16,700

11,200

20,900

15,000

5,480

677

15,500

7,050

12,600

4,110

3,060

536

3,480

991

8,740

2,890

10,100

3,610

16,000

8,180

20,000

11,000

17,500

10,100

20,400

12,300

12,800

5,770

4,280

663

12,500

6,500

12,000

4,150

1,800

535

3,270

747

9,340

2,720

11,600

3,630

16,400

8,270

19,600

12,200

18,500

10,400

20,400

10,600

14,200

6,110

6,360

700

13,800

6,230

10,100

3,560

2,280

519

3,420

738

10,200

2,990

11,200

3,940

16,100

8,500

19,400

11,500

18,000

11,000

19,000

10,900

13,700

6,540

10,700

2,270

11,400

5,560

9,600

3,140

509

4,040

700

10,800

3,100

11,000

4,150

16,600

8,690

19,800

11,800

18,800

11,000

21,800

11,200

13,000

5,540

12,500

2,380

11,000

4,590

9,540

2,860

2,570

437

4,550

566

10,800

3,500

11,000

4,080

16,700

8,880

18,800

11,200

21,200

12,400

19,500

10,200

14,600

5,160

9,420

2,280

10,600

4,300

9,710

2,560

5,930

467

5,220

604

10,100

3,580

11,700

3,690

16,800

9,080

19,200

12,200

22,000

11,900

22,100

12,000

13,300

4,630

12,100

2,640

10,700

3,430

10,900

2,740

7,800

540

5,970

625

10,100

3,460

12,500

4,000

16,200

9,000

19,900

13,400

21,600

12,500

19,700

10,600

13,000

4,430

9,650

2,160

11,000

3,260

11,500

3,160

7,910

1,120

5,760

717

9,200

3,080

13,300

4,590

15,700

8,910

21,500

13,000

19,000

12,200

20,100

11,300

13,000

4,110

12,500

3,600

12,600

3,240

13,700

2,920

6,790

1,290

5,980

714

9,480

3,330

13,500

4,750

15,400

8,750

20,800

12,700

20,200

11,500

20,800

11,400

12,400

3,900

12,500

2,620

8,980

3,010

9,410

3,630

7,130

1,280

6,600

886

10,600

3,300

13,800

4,570

15,500

8,440

20,800

12,800

20,000

11,400

17,700

11,100

12,900

3,660

14,400

3,660

—

8,810

3,050

6,940

1,560

7,860

1,080

9,700

3,380

11,500

4,260

16,400

8,530

20,700

13,100

19,500

11,400

20,400

10,800

13,000

3,000

13,600

3,700

—

10,600

2,630

9,820

1,840

6,640

1,080

8,820

3,360

12,600

4,280

16,600

8,930

21,100

12,600

19,900

10,800

18,500

11,200

12,600

2,860

13,800

4,650

—

6,940

1,600

—

5,490

1,180

—

13,200

4,950

15,700

9,160

—

20,400

11,700

—

Mean

16,007

7,336

9,132

2,089

13,091

5,251

11,851

3,836

5,715

1,040

5,482

1,126

10,159

3,074

11,648

3,827

15,623

7,640

18,260

14,891

19,426

12,194

21,687

12,833

Max

21,700

11,100

14,400

4,650

20,200

9,830

17,600

6,340

9,820

1,880

9,000

2,680

13,900

4,820

13,800

5,010

17,300

9,160

21,500

13,400

22,600

15,300

24,600

16,300

Min

12,400

2,860

3,800

663

8,980

3,010

6,940

1,600

1,800

437

415

264

6,160

1,230

7,430

2,450

12,400

4,800

14,900

6,770

16,700

10,100

17,700

10,200

—

Tables 1, 3–11, and 13–20 57

11 12

58 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Table 19. Daily mean dissolved-oxygen concentration, Delaware River at Benjamin Franklin Bridge at Philadelphia, Pennsylvania (U.S. Geological Survey site number 01467200), from April 1 to November 30, 2014. [Data from U.S. Geological Survey (2020d). Concentrations are in milligrams per liter. *, missing data; —, not applicable]

Day

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

12.3

9.7

7.0

7.3

6.1

5.4

5.8

7.6

12.0

9.7

7.0

7.6

5.9

5.2

5.9

7.9

12.0

9.5

7.1

7.6

5.7

5.3

5.8

8.3

12.0

9.2

7.1

7.6

5.6

5.2

5.8

8.4

11.9

9.2

7.2

7.6

5.5

5.1

6.0

8.3

11.8

9.1

7.4

7.8

5.4

5.2

6.2

8.2

11.6

9.1

7.9

5.3

5.2

6.4

8.1

11.2

9.0

8.3

7.8

5.4

5.1

6.4

8.3

11.3

9.0

8.4

7.5

5.5

5.2

6.5

8.3

11.3

8.8

8.1

7.4

5.5

5.3

6.5

8.3

11.2

8.6

7.5

7.3

5.5

5.3

6.3

8.2

11.1

8.5

6.8

7.1

5.4

6.2

8.1

11.0

8.4

6.2

6.8

5.2

5.3

6.2

8.2

10.8

8.3

6.1

6.4

5.2

6.2

8.3

10.4

8.1

6.7

5.9

5.1

5.3

6.3

8.6

10.0

7.9

7.3

5.7

5.2

5.3

6.2

8.7

9.8

7.5

7.9

6.0

5.1

5.3

6.2

8.7

9.5

7.6

8.3

6.6

5.1

5.3

6.5

9.0

9.7

7.7

8.4

7.0

5.2

5.5

7.0

9.6

10.1

7.8

8.5

7.2

5.1

5.7

7.1

9.8

10.2

8.0

8.7

7.2

5.1

5.7

7.1

10.1

10.3

8.1

8.6

7.3

5.2

5.6

7.1

10.3

8.3

8.2

7.3

5.2

5.8

7.2

10.5

10.2

8.4

7.8

7.3

5.1

5.9

7.3

10.5

10.1

8.1

7.4

7.1

5.1

6.2

7.4

10.5

9.8

7.9

6.7

6.9

5.2

6.2

7.5

10.6

9.7

7.7

6.4

6.7

5.2

6.1

7.6

10.6

9.6

7.4

6.4

6.5

5.2

6.1

7.5

10.8

9.5

7.3

6.6

6.5

5.5

6.0

7.5

10.8

9.4

6.9

7.0

6.2

5.6

5.8

7.4

10.9

—

7.0

—

6.1

5.6

—

Mean

10.7

8.3

7.4

7.0

5.4

5.5

6.6

9.2

Max

21.7

9.7

8.7

7.9

6.1

6.2

7.6

10.9

Min

9.4

6.9

6.1

5.7

5.1

5.8

7.6

Tables 1, 3–11, and 13–20 59 Table 20. Daily mean dissolved-oxygen concentration, Delaware River at Chester, Pennsylvania (U.S. Geological Survey site number 01477050), from April 1 to November 30, 2014. [Data from U.S. Geological Survey (2020e). Concentrations are in milligrams per liter. *, Missing data; —, not applicable]

Day

Apr.

May

June

July

Aug.

Sept.

Oct.

Nov.

11.3

9.4

7.5

6.8

6.0

5.2

6.7

7.9

11.4

9.1

7.9

5.9

4.9

6.6

8.3

11.3

9.1

8.2

5.5

5.9

5.0

6.7

8.5

11.2

8.9

8.4

5.6

4.9

6.8

8.6

11.0

8.9

8.6

5.9

5.1

5.0

6.8

8.5

10.8

8.8

9.2

6.3

5.0

4.9

7.0

8.5

10.9

8.7

9.8

6.5

5.1

4.9

7.3

8.4

10.5

8.6

10.0

6.5

5.3

5.4

7.3

8.6

10.7

8.5

9.4

6.5

5.5

5.9

7.3

8.6

10.6

8.4

8.5

6.2

5.5

5.8

7.2

8.5

10.4

8.3

7.6

6.2

5.3

5.8

7.2

8.4

10.3

8.2

6.8

6.2

5.7

5.6

7.2

8.3

10.3

8.2

6.2

6.0

5.6

5.7

7.1

8.3

10.3

8.3

5.9

5.7

5.4

5.7

7.2

8.5

9.9

8.1

5.9

5.3

5.5

5.9

7.3

8.7

9.8

7.9

5.9

5.0

5.6

5.9

7.2

8.9

9.9

7.7

6.3

5.0

5.5

6.0

7.1

9.5

7.1

6.9

5.2

5.4

6.0

6.8

9.4

9.2

7.1

5.4

5.3

6.2

6.8

9.8

9.7

7.3

7.6

5.6

5.3

6.6

7.0

10.1

9.3

7.1

7.7

5.5

5.0

6.3

7.0

10.2

9.3

6.9

7.6

5.4

6.2

7.1

10.3

9.4

7.1

7.4

5.5

5.7

6.3

7.3

10.3

9.7

7.2

7.4

5.5

5.6

6.7

7.6

10.4

9.5

7.3

5.8

5.3

7.3

7.8

10.2

9.4

7.5

7.1

5.7

5.1

7.1

7.8

10.1

9.4

7.4

7.0

5.7

5.0

7.1

7.8

10.3

9.4

7.3

7.0

6.3

5.3

6.9

7.7

10.2

9.5

7.7

7.1

5.8

5.5

6.8

7.6

10.2

10.0

7.5

7.0

5.8

5.6

6.7

7.6

10.2

—

7.5

—

5.5

—

7.6

—

Mean

10.1

8.0

7.5

5.8

5.4

6.0

7.2

9.2

Max

11.4

9.4

10.0

6.8

6.0

7.3

7.8

10.4

Min

9.2

6.9

5.9

5.0

4.9

6.6

7.9

60 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

References Cited Delaware River Basin Commission [DRBC], 2021, Delaware Estuary water quality monitoring program: DRBC web page, accessed November 5, 2021, at https://www.nj.gov/drbc/ programs/quality/boat-run.html. DiFrenna, V.J., Andrews, W.J., Russell, K.L., Norris, J.M., and Mason, R.R., Jr., 2020, Report of the River Master of the Delaware River for the period December 1, 2010– November 30, 2011: U.S. Geological Survey Open-File Report 2020–1020, 127 p., accessed April 15, 2021, at https://doi.org/10.3133/ofr20201020. DiFrenna, V.J., Andrews, W.J., Russell, K.L., Norris, J.M., and Mason, R.R., Jr., 2022, Report of the River Master of the Delaware River for the period December 1, 2012– November 30, 2013: U.S. Geological Survey Open-File Report 2022–1068, 99 p., accessed May 1, 2023, at https://doi.org/10.3133/ofr20221068. Kauffman, G., Belden, A., and Homsey, A., 2009, Technical summary—State of the Delaware Basin report—A report on the health of the 13,539-square-mile Delaware River Basin in Delaware, New Jersey, New York, and Pennsylvania: Delaware River Basin Commission and Partnership for the Delaware Estuary, prepared by University of Delaware, 209 p., accessed March 11, 2019, at http://udspace.udel.edu/ handle/19716/3808. Russell, K.L., Ockerman, D., Krejmas, B.E., Paulachok, G.N., and Mason, R.R., Jr., 2019, Report of the River Master of the Delaware River for the Period December 1, 2009– November 30, 2010: U.S. Geological Survey OpenFile Report 2019–1093, 128 p. [Also available at https://doi.org/10.3133/ofr20191093.] U.S. Environmental Protection Agency, 2016, Indicators— Conductivity: U.S. Environmental Protection Agency web page, accessed August 7, 2018, at https://www.epa.gov/ national-aquatic-resource-surveys/indicators-conductivity. U.S. Geological Survey, [USGS], 2019a, USGS 01417000 East Branch Delaware River at Downsville NY: USGS National Water Information System, accessed January 23, 2019, at https://waterdata.usgs.gov/nwis/dv? cb_00060=on&format=html&site_no=01417000&referred_ module=sw&period=&begin_date=2013-12-01&end_date= 2014-11-30. U.S. Geological Survey, [USGS], 2019b, USGS 01425000 West Branch Delaware River at Stilesville NY: USGS National Water Information System, accessed January 23, 2019, at https://nwis.waterdata .usgs.gov/nwis/dv?cb_00060=on&format=html&site_no= 01425000&referred_module=sw&period=&begin_date= 2013-12-01&end_date=2014-11-30.

U.S. Geological Survey, [USGS], 2019c, USGS 01436000 Neversink River at Neversink NY: USGS National Water Information System, accessed January 23, 2019, at https://nwis.waterdata.usgs.gov/nwis/dv?cb_00060= on&format=html&site_no=01436000&referred_module= sw&period=&begin_date=2013-12-01&end_date= 2014-11-30. U.S. Geological Survey, [USGS], 2019d, USGS 01438500 Delaware River at Montague NJ: USGS National Water Information System, accessed January 23, 2019, at https://nwis.waterdata.usgs.gov/nwis/dv?cb_00060= on&format=html&site_no=01438500&referred_module= sw&period=&begin_date=2013-12-01&end_date= 2014-11-30. U.S. Geological Survey, [USGS], 2019e, USGS 01460440 Delaware and Raritan Canal at Port Mercer NJ: USGS National Water Information System, accessed January 23, 2019, at https://nwis.waterdata .usgs.gov/nwis/dv?cb_00060=on&format=html&site_no= 01460440&referred_module=sw&period=&begin_date= 2013-12-01&end_date=2014-11-30. U.S. Geological Survey, [USGS], 2019f, USGS 01463500 Delaware River at Trenton NJ: USGS National Water Information System, accessed January 23, 2019, at https://waterdata.usgs.gov/nwis/dv?cb_00060= on&format=html&site_no=01463500&referred_module= sw&period=&begin_date=2013-12-01&end_date= 2014-11-30. U.S. Geological Survey, [USGS], 2019g, USGS water data for the Nation: USGS National Water Information System database, accessed January 23, 2019, at https://doi.org/10.5066/ F7P55KJN. U.S. Geological Survey, [USGS], 2020a, Dissolved oxygen and water: USGS web page, accessed April 10, 2020, at https://usgs.gov/special-topic/water-science-school/ science/dissolved-oxygen-and-water?qt-science_center_ objects=0. U.S. Geological Survey, [USGS], 2020b, pH and water: USGS web page, accessed April 10, 2020, at https://usgs.gov/special-topic/water-science-school/ science/ph-and-water?qt-science_center_objects=0. U.S. Geological Survey, [USGS], 2020c, Temperature and water: USGS web page, accessed April 10, 2020, at https://usgs.gov/special-topic/water-science-school/ science/temperature-and-water?qt_science_center_ objects=0.

References Cited 61 U.S. Geological Survey, [USGS], 2020d, USGS 01467200 Delaware River at Ben Franklin Bridge, at Philadelphia, PA: USGS National Water Information System, accessed April 10, 2020, at https://nwis.waterdata.usgs.gov/pa/nwis/ dv?cb_all_=on&cb_00010=on&cb_00010=on&cb_00010= on&cb_00010=on&cb_00010=on&cb_00011=on&cb_ 00065=on&cb_00095=on&cb_00095=on&cb_00095= on&cb_00095=on&cb_00095=on&cb_00300=on&cb_ 00300=on&cb_00301=on&cb_00400=on&cb_00400= on&cb_32315=on&cb_32322=on&cb_63680=on&cb_ 99133=on&format=html&site_no=01467200&referred_ module=qw&period=&begin_date=2014-04-01&end_date= 2014-11-30. U.S. Geological Survey, [USGS], 2020e, USGS 01477050 Delaware River at Chester PA: USGS National Water Information System, accessed April 10, 2020, at https://waterdata.usgs.gov/nwis/dv?cb_all_=on&cb_ 00010=on&cb_00011=on&cb_00095=on&cb_00300= on&cb_00400=on&cb_99133=on&format=html&site_no= 01477050&referred_module=sw&period=&begin_date= 2014-04-01&end_date=2014-11-30. U.S. Geological Survey, [USGS], 2020f, USGS 01482800 Delaware River at Reedy Island Jetty, DE: USGS National Water Information System, accessed April 10, 2020, at https://waterdata.usgs.gov/nwis/dv?cb_00010=on&cb_ 00095=on&cb_00300=on&cb_00400=on&format= html&site_no=01482800&referred_module=sw&period= &begin_date=2013-12-01&end_date=2014-11-30.

62 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Glossary The following definitions apply to various terms and procedures used in this report. Balancing adjustment An operating procedure used by the Office of the Delaware River Master to correct for inaccuracies inherent in the design of releases from New York City reservoirs to meet the Montague flow objective at Montague, New Jersey. The balancing adjustment calls for more water to be released when previous directed releases (or lack of releases) were insufficient to meet the Montague flow objective. This adjustment calls for less water to be released when previous directed releases were higher than required to meet the Montague flow objective. Based on provisional data, the balancing adjustment is computed as 10 percent of the difference between the cumulative adjusted directed release and the cumulative directed release required for exact forecasting. The balancing adjustment is applied to the following day’s release design. The maximum daily balancing adjustment is intentionally limited to preclude unacceptably large variations in the adjusted flow objective. Capacity Total useable volume in a reservoir between the point of maximum depletion and the elevation of the lower crest of the spillway. Conservation releases Controlled releases from the Pepacton, Cannonsville, and Neversink Reservoirs in New York designed to maintain specified minimum flows in stream channels immediately below the reservoirs (tailwaters). The following conservation release rate zones are defined in the June 1, 2014, Flexible Flow Management Program (appendix 1): • L1—Spill mitigation when New York City combined reservoir storage is in the spill mitigation (L1) storage zone. • L2—Conservation releases when New York City combined reservoir storage is in the normal (L2) storage zone. • L3—Conservation releases when New York City combined reservoir storage is in the drought watch (L3) storage zone.

• L4—Conservation releases when New York City combined reservoir storage is in the drought warning (L4) storage zone. • L5—Conservation releases when New York City combined reservoir storage is in the drought (L5) storage zone (also referred to as “Drought Emergency”). Directed releases Controlled releases from New York City reservoirs in the upper Delaware River Basin, designed by the Office of the Delaware River Master to meet the Montague flow objective. Discharge mitigation releases Designed to help mitigate the effects of spilling immediately below the Delaware River Basin reservoirs. The 2014 Flexible Flow Management Program details the releases in section 7 (appendix 1). Diversions The out-of-basin transfer of water by New York City from the Pepacton, Cannonsville, and Neversink Reservoirs of New York State in the upper Delaware River Basin through the East Delaware, West Delaware, and Neversink Tunnels, respectively, to New York City’s water-supply system. Also, the out-of-basin transfer of water by New Jersey from the Delaware River through the Delaware and Raritan Canals. Excess quantity As defined by the Decree, the excess quantity of water is “equal to 83 per cent [sic] of the amount by which the estimated consumption during such year is less than the City’s estimate of the continuous safe yield during such year of all its sources obtainable without pumping.” The excess quantity shall not exceed 70 billion gallons, and the seasonal period for releasing the excess quantity begins on June 15 and concludes on the following March 15. Flexible Flow Management Program (FFMP) A set of rules for the management of storage, diversions, releases, and flow targets relating to the apportioning of water from the Delaware River Basin under the 1954 Decree of the Supreme Court of the United States and unanimously agreed to by the Decree Parties (Delaware, New Jersey, New York, New York City, and Pennsylvania).

Glossary 63 Index gaging stations Specific sites on tributaries of the upper Delaware River where systematic observations of gage height and discharge are made. Interim Excess Release Quantity An Interim Excess Release Quantity (IERQ) was defined in the 2014 Flexible Flow Management Program (appendix 1). The IERQ is computed as 83 percent of the difference between the highest year’s consumption of the New York City water-supply system during the period 2002–2006 (1,257 million gallons per day) and New York City’s current estimate of continuous safe yield of the New York City water-supply system of 1,290 million gallons per day, obtainable without pumping. During the 2014 report year, the IERQ available for release was 15,468 cubic feet per second for a day. 6,045 cubic feet per second for a day of the IERQ is incorporated in the releases tables to enhance base releases from the New York City Delaware River Basin reservoirs. Interim Excess Release Quantity Extraordinary Needs Bank From the 2014 Flexible Flow Management Program (appendix 1): “In addition to the hydrologic criteria described in Section 2.5.6.A. [sic] of the Water Code and subject to other provisional uses of the IERQ as provided herein, the Decree Parties [Delaware, New Jersey, New York State, New York City, and Pennsylvania], the DRBC and the River Master may at any time review extraordinary water needs to support such research, aquatic-life, or other water-use activity as may be approved by the DRBC. Upon unanimous agreement, the Decree Parties may bank all or a portion of the IERQ remaining at such time, and such portion shall be placed in an IERQ Extraordinary Needs Bank and used to provide for such extraordinary water needs. Such quantity as may be so banked shall be deducted from the IERQ. Any unused Extraordinary Needs Bank water shall be returned to IERQ.”

Key gaging stations Specific sites on the East Branch Delaware River, West Branch Delaware River, Neversink River, Delaware and Raritan Canal, and mainstem Delaware River where continuous, systematic observations of gage height and discharge are made. Data from these stations are used year-round in Office of the Delaware River Master operations. Maximum reservoir depletion The minimum water-surface level or elevation below which a reservoir ceases to continue making delivery of quantities of water for all purposes for which the reservoir was designed. This level is also referred to as “minimum full-operating level.” Montague flow objective In section 3a of the June 1, 2014, Flexible Flow Management Program (appendix 1), “Except with respect to limitations provided herein in Section 5, releases from the City Delaware Basin Reservoirs shall be in quantities designed to maintain, during Normal storage conditions, a minimum basic rate of flow at the gaging station of the U.S. Geological Survey * * * at Montague, N. J. of 1,750 cubic feet per second (cfs), as directed by the River Master in accordance with Section VII. [sic] of the Decree. During Basinwide Drought Watch, Drought Warning, and Drought Emergency, in accordance with Section 5 of this Agreement and Section 2.5.3.B. [sic] and Tables 1 and 2 of the Delaware River Basin Water Code * * *, the Montague flow objective shall vary based upon the time of year and location of the salt front, and minimum compensating releases shall be made by the City of New York from its reservoirs in the upper Delaware Basin.” Rate of flow Mean discharge for a specified 24-hour period, measured in cubic feet per second for a day ([ft3/s]-d) or million gallons per day (Mgal/d). Rate of flow at Montague Daily mean discharge of the Delaware River at Montague, New Jersey, streamgaging site (U.S. Geological Survey site number 01438500) computed on a calendar-day basis. Reservoir-controlled releases Controlled releases from reservoirs passed through outlet valves in the dams or turbines in powerplants. These releases do not include spillway overflow at the reservoirs.

64 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014 Salt front The salt front is the 250 parts per million isochlor, or line of equal chloride concentration, in the Delaware River estuary. One part per million is one part of solute (in this case, chloride) per one million parts of solvent (river water). The 7-day average location of the salt front is used as an indicator of salinity intrusion in the Delaware River estuary and a factor affecting the Montague and Trenton flow objectives during drought emergencies. Storage or contents Usable volume of water in a reservoir. Unless otherwise indicated, volume is computed based on the pool level above the point of maximum depletion. Time of day Time of day is expressed in 24-hour Eastern Standard Time, which during the report year included a 23-hour day on March 11 and a 25-hour day on November 4.

Trenton flow objective In section 3b of the June 1, 2014, Flexible Flow Management Program (appendix 1), “Section 2.5.3 of the Water Code establishes a set of equivalent flow objectives at Trenton, N.J. to control salinity intrusion in the Delaware Estuary. During Basinwide Drought Watch, Drought Warning, and Drought Emergency, in accordance with Section 5 of this Agreement and Section 2.5.3.B. [sic] and Tables 1 and 2 of the Water Code, the Trenton Equivalent Flow Objective shall vary based upon the time of year and location of the salt front, and minimum compensating releases shall be made by the City of New York from its reservoirs in the upper Delaware Basin.” Uncontrolled runoff at Montague Runoff from the 3,480-square-mile drainage area above Montague, New Jersey, excluding the drainage area above the Pepacton, Cannonsville, and Neversink Reservoirs; Lake Wallenpaupack; and Rio Reservoir, but including spillway overflow at these dams.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 65

Appendix 1. Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014 An agreement affecting the Amended Decree of the U.S. Supreme Court in New Jersey v. New York, 347 U.S. 995 (1954), for managing diversions and releases under the Decree, was consented to by all of the Decree Parties: the State of Delaware, the State of New Jersey, the State of New York, the Commonwealth of Pennsylvania, and the City of New York. The agreement is a 1-year successor to the Flexible Flow Management Program that ended on May 31, 2014. A copy of the agreement, which is in effect through May 31, 2015, is included as appendix 1 here; the original page numbers were removed to avoid confusion. The agreement is also available through the U.S. Geological Survey website (https://webapps.usgs.gov/odrm/documents/ffmp/ FFMP_2014_Agreement.pdf).

66 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014 1.

FLEXIBLE FLOW MANAGEMENT PROGRAM a.

Program History

Current Program

Criteria for Flexible Flow Management Program Modification

DIVERSIONS a.

New York City

New Jersey

FLOW OBJECTIVES a.

Montague Flow Objective

Trenton Equivalent Flow Objective

RELEASES a.

Conservation Releases from the City Delaware Basin Reservoirs

Excess Release Quantity

Interim Excess Release Quantity

Interim Excess Release Quantity Extraordinary Needs Bank

DROUGHT MANAGEMENT a.

Drought Watch

Drought Warning

Drought Emergency

New Jersey Diversion Offset Bank

Entry and Exit Criteria

Balancing Adjustment

HABITAT PROTECTION PROGRAM a.

Applicability and Management Objectives

Controlled Releases for Habitat Protection Program

DISCHARGE MITIGATION PROGRAM

SALINITY REPULSION

DWARF WEDGEMUSSELS

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 67

10.

LAKE WALLENPAUPACK

11.

RECREATIONAL BOATING

12.

ESTUARY AND BAY ECOLOGICAL HEALTH

13.

WARM WATER AND MIGRATORY FISH

14.

MONITORING AND REPORTING a.

Temperature

IERQ

15.

REASSESSMENT STUDY

16.

PERIODIC EVALUATION AND REVISION

17.

TEMPORARY SUSPENSION OR MODIFICATION

18.

RESERVATIONS

19.

EFFECTIVE DATE

20.

RENEWAL AND REVISION

21.

REVERSION

68 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

An Agreement, consented to by the Parties (the State of Delaware (Del.), the State of New Jersey (N.J.), the State of New York (N.Y.), the Commonwealth of Pennsylvania (Pa.), and the City of New York (NYC or City); hereafter Decree Parties) to the Amended Decree of the U.S. Supreme Court in New Jersey v. New York, 347 U.S. 995 (1954), (hereafter Decree) that succeeds for a one-year period the Flexible Flow Management Program (FFMP) that terminated on May 31, 2014, for managing diversions and releases under the Decree. The Decree Parties hereby agree to support all provisions of this Agreement. 1.

FLEXIBLE FLOW MANAGEMENT PROGRAM a.

Program History

On September 26, 2007, the Decree Parties unanimously agreed to implement a Flexible Flow Management Program (FFMP) for operation of the three New York City reservoirs in the Delaware River Basin. The FFMP was designed to provide a more natural flow regime and a more adaptive means than the previous operating regime for managing releases and diversions from New York City’s Pepacton, Cannonsville, and Neversink Reservoirs (City Delaware Basin Reservoirs). The FFMP addresses competing needs and uses including safe and reliable water supplies to serve the needs of more than 17 million people; drought management; flood mitigation; protection of the cold water fishery; a diverse array of habitat needs in the mainstem river, estuary, and bay; and salinity repulsion. The Decree, which resolved an interstate dispute related to these reservoirs, made no provision for spill mitigation, conservation, and ecological releases. The Initial Implementation Cycle of the FFMP was from October 1, 2007 to May 31, 2011. The conceptual framework of the FFMP eliminated the reservoir storage “banks” previously relied upon for habitat protection purposes and instead based releases on reservoir storage levels, resulting in larger releases when water is abundant and smaller releases when storage is at or below Normal levels. The discharge mitigation component of the FFMP was intended to reduce the likelihood that the three reservoirs could be full and spilling coincident with a major storm or thaw. The FFMP was designed to provide an adaptive framework which allows increased flexibility for program modifications and adjustments compared to the previous operating regime. This framework provides a tool to inform program-management decisions as new scientific and technical information is accumulated. During the Initial Implementation Cycle, notable revisions to the FFMP included the following: Temporary Modifications – Such modifications have been made in support of increased reservoir releases for maintenance, inspection, and repair of the Delaware Aqueduct and appurtenant infrastructure; increased releases for supplemental flood mitigation; emergency thermal releases for protection of the cold water fishery; and enhanced summer releases through the use of Interim Excess Release Quantity (IERQ) Extraordinary Needs Banks.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 69

Permanent Changes – Such changes have been made to the FFMP agreement to allow for increased reservoir releases for habitat protection needs in late May and early September; to clarify the meaning of “temporary” releases schedules during periods of maintenance and repair of City Delaware Basin Reservoirs and appurtenant infrastructure; to address the issue of storage zone bouncing; and to allow the use of up to 100 percent of the water equivalent of snow pack for the calculation of combined storage to determine reservoir releases rates. b.

Current Program

The original FFMP, effective October 1, 2007 and its subsequent modifications on December 10, 2008 and February 14, 2011, expired on May 31, 2011. Collectively, these programs are referred to herein as the Initial Implementation Cycle FFMP. The subsequent FFMP Agreement, effective June 1, 2011 and expired on May 31, 2012, was a one-year program unanimously approved by the Decree Parties and built upon the framework of the previous FFMP agreements. The FFMP Agreement effective June 1, 2012 and expiring on May 31, 2013 was a one-year extension of the June 1, 2011 Agreement and was unanimously approved by the Decree Parties. The 2013 FFMP was an extension of the June 1, 2011 Agreement. The current FFMP is also an extension of the June 1, 2011 Agreement that incorporates the edits from the previous three extensions of the 2011 Agreement and shall be effective from June 1, 2014 to May 31, 2015. Although several limited studies and evaluations have been conducted to assess the effectiveness of selected elements of the Initial Implementation Cycle FFMP and suggest opportunities for its improvement, some of which were incorporated in the previous extensions of the Agreement, additional analyses and studies are needed prior to the Decree Parties reaching a longer term agreement for managing diversions and releases under the Decree. The current FFMP is informed by impact assessments of previous FFMP Agreements, information and experience accumulated during the previous programs, and input from various stakeholder groups and the public. The current FFMP differs from the Initial Implementation Cycle FFMP mainly in the following key elements: Use of additional tables (i.e., schedules) of reservoir releases rates for the City Delaware Basin Reservoirs, developed on the basis of Forecast-based Available Water (FAW) not needed contemporaneously for New York City’s water supply; Use of new releases tables that replace releases tables utilized in the Initial Implementation Cycle FFMP; Use of new rule curves that replace rule curves utilized in the Initial Implementation Cycle FFMP; Use of New York City’s Operations Support Tool (OST) to guide selection of appropriate releases tables; Releases rates based, in part, upon recommendations provided jointly by the New York State Department of Environmental Conservation and the Pennsylvania Fish and Boat Commission Joint Fisheries Paper (January 12, 2010);

70 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Drought condition releases rates (L3-L5) that are consistent among the releases tables; Modifications to New Jersey’s diversion during drought conditions and the establishment of a Diversion Offset Bank for New Jersey; Incorporation of the seasonal releases design of the FFMP Temporary Summer 2010 fisheries program; Redirection of the IERQ used to support the seasonal flow increment, which was intended to increase the Montague flow objective from 1,750 cfs to 1,850 cfs between June 15 and September 15; Use of 3.91 billion gallons (6,045 cfs-days) of IERQ to increase the base releases rates in the tables; Reattachment of the Montague flow objective with the location of the Delaware Estuary salt front (salinity vernier); Modified spill mitigation program that endeavors to maintain reservoir levels at the Conditional Seasonal Storage Objective (CSSO), creating a high probability of maintaining ten (10) percent void spaces from September 1, 2014 through March 15, 2015; and Postponement of a water-resources reassessment study until more information is available. The additional releases tables and use of OST will facilitate the redirection of spilled water to managed water to benefit downstream interests when water in the City Delaware Basin Reservoirs is forecasted to be available for purposes other than New York City’s water supply. The June 1, 2012 FFMP Agreement differed from the previous FFMP Agreement in the following elements: Section, 1.b., Current Program, was updated to reflect the June 1, 2012 FFMP one-year extension; The dates were revised to correspond to the effective term of the June 1, 2012 FFMP Agreement; Additional units of measurement for water volume were provided; and The State of Delaware had one party signing the current FFMP Agreement, as opposed to two. The June 1, 2013 FFMP Agreement was an extension of, and incorporates herein the same terms as the June 1, 2011 and 2012 FFMP Agreements.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 71

The June 1, 2014 FFMP Agreement is an extension of the June 1, 2011 Agreement and incorporation the changes of the 2012, and 2013 Agreements. This Agreement also changes the term Conditional Storage Objective (CSO) to Conditional Seasonal Storage Objective (CSSO). c.

Criteria for Flexible Flow Management Program Modification

In reviewing proposed modifications to address the purposes of the FFMP, as provided in Sections 16 and 17 herein, the Decree Parties will consider criteria that may include, without any particular priority, and not limited to, the following: i.

Decree Party equity

ii.

Net benefits and costs to environmental and economic resources

iii.

Source and sustainability of water available to support modification and the environmental or economic resource(s)

iv.

Habitat types—with naturally-occurring habitats receiving consideration over man-made habitats

Scientific basis for modification

vi.

Impacts to drought management, water supply and flood mitigation, including but not limited to: 1) frequency, duration and seasonal timing of the various levels of drought; and 2) frequency, duration, levels of storage, diversions, releases and flows

vii.

Extent to which the diversions and the Montague minimum basic rate of flow provided in the Decree are met

viii.

Potential impacts to water quality, existing National and State Pollution Discharge Elimination System permits and the assimilative capacity of the Delaware River

ix.

Ease and practicability of operation

Consistency with adaptive management principles

xi.

Applicability and implementation of water conservation practices

xii.

Impacts to salinity

The Decree Parties agree to evaluate these parameters as well as potential additional parameters, when considering modifications to this program. 2.

DIVERSIONS a.

New York City

In accordance with Section III.A. of the Decree, and subject to the limitations provided herein, at no time during the twelve-month period, commencing June 1, 2014 shall the aggregate total quantity of water diverted by the City, divided by the number of days elapsed since May 31, 2014 exceed 800 million gallons per day (mgd). The City shall be subject to the conditions and obligations in connection with the diversions, and releases

72 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

to maintain the Montague flow objective, set forth in Section III.B. of the Decree. For this Agreement, the City shall make releases from its Delaware Basin Reservoirs in accordance with the releases schedules incorporated herein. b.

New Jersey

In accordance with Section V. of the Decree, except with respect to limitations provided herein in Section 5, the State of New Jersey may divert outside the Delaware River watershed, from the Delaware River or its tributaries in New Jersey, without compensating releases, the equivalent of 100 mgd under the supervision of the Delaware River Master (River Master) established by the Decree and shall be subject to the following conditions and obligations:

Until the State of New Jersey builds and utilizes one or more reservoirs to store waters of the Delaware River or its tributaries for the purpose of diverting the same to another watershed, or purchases or leases reallocated water or new storage from an existing or new storage facility, the State of New Jersey may divert not to exceed 100 mgd as a monthly average, with the diversion on any day not to exceed 120 million gallons.

ii.

If and when the State of New Jersey has built and is utilizing one or more reservoirs to store waters of the Delaware River or its tributaries for the purpose of diversion to another watershed, it may withdraw water from the Delaware River or its tributaries into such impounding reservoirs without limitation except during the months of July, August, September and October of any year, when not more than 100 mgd as a monthly average and not more than 120 million gallons in any day shall be withdrawn. This restriction may be modified upon unanimous consent of the Decree Parties should the State of New Jersey purchase or lease reallocated water or new storage from an existing or new facility.

iii.

Regardless of whether the State of New Jersey builds and utilizes storage reservoirs for diversion, its total diversion for use outside of the Delaware River watershed without compensating releases shall not exceed an average of 100 mgd during any calendar year.

FLOW OBJECTIVES a.

Montague Flow Objective

Except with respect to limitations provided herein in Section 5, releases from the City Delaware Basin Reservoirs shall be in quantities designed to maintain, during Normal storage conditions, a minimum basic rate of flow at the gaging station of the U.S. Geological Survey (USGS) at Montague, N. J. of 1,750 cubic feet per second (cfs), as directed by the River Master in accordance with Section VII. of the Decree.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 73

During Basinwide Drought Watch, Drought Warning, and Drought Emergency, in accordance with Section 5 of this Agreement and Section 2.5.3.B. and Tables 1 and 2 of the Delaware River Basin Water Code (Water Code), the Montague flow objective shall vary based upon the time of year and location of the salt front, and minimum compensating releases shall be made by the City of New York from its reservoirs in the upper Delaware Basin. The Decree Parties, with the guidance of the Operations Support Tool described herein in Section 6, shall seek to maximize the frequency of the minimum basic rate of 1,750 cfs flows at the USGS gaging station at Montague, N.J. without adversely impacting basin water supplies and other objectives of the FFMP. b.

Trenton Equivalent Flow Objective

Section 2.5.3 of the Water Code establishes a set of equivalent flow objectives at Trenton, N.J. to control salinity intrusion in the Delaware Estuary. One means for salinity management is through releases from Beltzville and Blue Marsh Reservoirs. Blue Marsh Reservoir is located on the Schuylkill River and is downstream of the USGS gaging station at Trenton, N. J. Releases from Blue Marsh Reservoir, as well as bypass flows from Yardley and the Point Pleasant Pumping station, are considered to be as effective at repelling salinity as water entering the estuary from the main stem Delaware River at Trenton. The Trenton Equivalent Flow is computed as the sum of flows at the USGS Trenton gaging station, releases in excess of conservation releases from Blue Marsh Reservoir, and 70 cfs to account for bypass flows via Yardley and the Point Pleasant Pumping Station. This value is compared to the Trenton Equivalent Flow Objective to determine if the flow objective was satisfied. During Basinwide Drought Watch, Drought Warning, and Drought Emergency, in accordance with Section 5 of this Agreement and Section 2.5.3.B. and Tables 1 and 2 of the Water Code, the Trenton Equivalent Flow Objective shall vary based upon the time of year and location of the salt front, and minimum compensating releases shall be made by the City of New York from its reservoirs in the upper Delaware Basin. 4.

RELEASES a.

Conservation Releases from the City Delaware Basin Reservoirs

Conservation releases designed for protection of the ecology in the stream reaches below the City Delaware Basin Reservoirs, including water quality, fisheries, and aquatic habitat needs, shall be made at the rates described in the Habitat Protection Program in Section 6 below.

74 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Excess Release Quantity

For the period of the current program, the Decree Parties agree to use the Excess Release Quantity, as defined in the Decree, in support of an Interim Excess Release Quantity (IERQ) as defined in Paragraph c. below. c.

Interim Excess Release Quantity

For the period of the current program, an IERQ equivalent to 10.0 billion gallons (15,468 cfs-days) shall be provided as computed in the Initial Implementation Cycle of the FFMP based upon 83 percent of the difference between 1,257 mgd, the highest year’s consumption of the NYC water supply system between 2002 and 2006 inclusive and NYC’s estimate of continuous safe yield of the NYC water supply system at that time, of 1,290 mgd obtainable without pumping. For the current program, 3.91 billion gallons (6,045 cfs-days) of the IERQ is incorporated in the releases tables to enhance base releases from the City Delaware Basin Reservoirs. The IERQ balance of 6.09 billion gallons (9,423 cfs-days) is reserved and may be used for additional releases to meet the Trenton Equivalent Flow Objective or to establish an Extraordinary Needs Bank as provided for in Section d., below. Upon request by the Lower Basin States or DRBC, NYC shall release from the IERQ, water in sufficient quantities to maintain a flow at Trenton of 3,000 cfs during basinwide Normal conditions for the period commencing on June 15 and continuing through March 15 (seasonal period). The IERQ required to be released in any seasonal period shall not exceed 70 billion gallons. In releasing the IERQ, NYC shall not be required to release at rates exceeding the capacity of its release works. NYC shall make releases from the IERQ as provided above until May 31, 2015 or until the aggregate quantity of the IERQ is exhausted, whichever occurs first. d.

Interim Excess Release Quantity Extraordinary Needs Bank

In addition to the hydrologic criteria described in Section 2.5.6.A. of the Water Code and subject to other provisional uses of the IERQ as provided herein, the Decree Parties, the DRBC and the River Master may at any time review extraordinary water needs to support such research, aquatic-life, or other water-use activity as may be approved by the DRBC. Upon unanimous agreement, the Decree Parties may bank all or a portion of the IERQ remaining at such time, and such portion shall be placed in an IERQ Extraordinary Needs Bank and used to provide for such extraordinary water needs. Such quantity as may be so banked shall be deducted from the IERQ. Any unused Extraordinary Needs Bank water shall be returned to IERQ.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 75

DROUGHT MANAGEMENT Figure 1 defines six zones of combined reservoir usable storage relative to the three drought management rule curves (Drought Watch, Drought Warning, and Drought Emergency creating Zones L3, L4, and L5, respectively) and two additional curves that subdivide the Normal storage zone into three zones (L1, L2-a, and L2-b). The three drought management rule curves are described below. The two Normal conditions rule curves are described in Section 6. During the effective period of this Agreement, the following drought stage definitions and procedures will be in effect: a.

Drought Watch (L3)

The seasonally segmented line (shown as dashes) dividing the current Drought Warning in Figure 1 of DRBC Resolution No. 83-13 and DRBC Docket No. D-77-20 CP (Revised) is raised by four (4) billion gallons during the entire year. In addition, the upper half of the Drought Warning zone, previously referred to as DW1, is hereby designated Drought Watch, with diversions and flow objectives as shown in Table 1. b.

Drought Warning (L4)

The lower half of the Drought Warning zone (DW2), based upon the rule curves included in DRBC Resolution No. 83-13 and as modified by Paragraph a. above, is hereby designated Drought Warning, with diversions and flow objectives as shown in Table 1. c.

Drought Emergency (L5)

The operation level formerly named Drought in accordance with the rule curves included in DRBC Resolution No. 83-13 and Docket D-77-20 (Revised) is hereby designated Drought Emergency. During Drought Emergency, diversions shall be limited as shown in Table 1. The Montague and Trenton Equivalent Flow Objectives are shown in Tables 1 and 2. New York City’s diversions from the Delaware River Basin shall be in accordance with Table 1 (Interstate Operation Formula for Diversions and Flow Objectives). Minimum releases from the New York City Delaware Basin Reservoirs shall be in accordance with Table 3 (Schedule of Releases during Drought Operations). New Jersey’s maximum average monthly diversion from the Delaware River Basin via the Delaware and Raritan Canal shall be in accordance with Table 1, and shall not exceed 100 mgd, except when the Basin is in Drought Emergency, when said diversion shall not exceed a daily running average of 85 mgd commencing on the day such Drought Emergency becomes effective. Under all City Delaware Basin Reservoir combined storage conditions, New Jersey’s diversion on any day shall not exceed 120 million gallons.

76 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

d. New Jersey Diversion Offset Bank There is hereby established a Diversion Offset Bank, not to exceed 1.84 billion gallons (2,850 cfs-days) of water in the City Delaware Basin Reservoirs, for the purpose of offsetting the increased diversions by New Jersey as provided in Table 1 of this Agreement, during basinwide Drought Watch, Drought Warning, and Drought Emergency conditions. The additional increases are in increments, not to be exceeded on any day, as follows: 0 mgd during Normal conditions; up to 15 mgd during Drought Watch; up to 30 mgd during Drought Warning; and up to 20 mgd during Drought Emergency. The differences in New Jersey’s diversion, computed on the basis of Table 1 of the Good Faith Agreement, and the corresponding rates in Table 1 of this Agreement, establish the additional increments for New Jersey’s diversion as incorporated herein. This Diversion Offset Bank shall be created by selective reduced levels of releases in the L2 storage zones from Cannonsville Reservoir, during the periods June 1 to August 31, 2014 and May 21 to May 31, 2015 as provided in Tables 4g (L2-a and L2-b) and 4f (L2a). Water saved by these reductions shall be accumulated in the Diversion Offset Bank and shall be available to offset New Jersey’s incremental increases in diversions through the Delaware and Raritan Canal during drought periods. If the accumulated incremental increased diversions by New Jersey, at any time, exceed the available water in the Diversion Offset Bank, the Lower Basin Reservoirs in Pennsylvania will provide the additional water to offset New Jersey’s increased diversions. At no time shall New Jersey’s accumulated incremental increased diversions exceed 1.84 billion gallons (2,850 cfs-days). Any portion of the ERQ/IERQ or uncompensated storage in the downbasin reservoirs in Pennsylvania or in the New York City Delaware Basin Reservoirs which may be used to offset the increased New Jersey drought diversions provided herein is for the term of this agreement only and shall not be cited as precedent of any intention to provide such in future agreements. Releases from the Diversion Offset Bank shall be at the direction of New Jersey in consultation with DRBC, and will be implemented by the River Master. Releases from the Lower Basin Reservoirs for New Jersey’s diversion, if necessary, shall be at the direction of DRBC, in consultation with and at the request of New Jersey. Releases from the Diversion Offset Bank or the Lower Basin Reservoirs to offset New Jersey’s incremental increases in diversions through the Delaware and Raritan Canal shall be in accordance with timing procedures agreed upon by DRBC, New Jersey, and the River Master. No offsetting or accounting for offsetting is required for New Jersey’s increased diversions on any day when DRBC determines that no water is required from Lower Basin Reservoirs to meet the current Trenton flow objective. The River Master’s office will maintain the ongoing accounting for releases made from

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 77

this bank. At no time during the releases year commencing June 1, 2014 shall releases from the Diversion Offset Bank exceed the unused balance of the bank. The Diversion Offset Bank shall terminate automatically on June 1, 2015; provided that it may be terminated at an earlier date and the remaining balance added to the IERQ, by agreement of the Decree Parties. Figure 1 New York City Delaware System Usable Combined Storage (Cannonsville, Pepacton, and Neversink Reservoirs)

Table 1 Interstate Operation Formula for Diversions and Flow Objectives NYC Diversion (mgd)

NJ Diversion (mgd)

Montague Flow Objective (cfs)

Trenton Flow Objective (cfs)

Normal (L1, L2)

800

100

1,750

3,000

Drought Watch (L3)

680

100

1,650

2,700

Drought Warning (L4)

560

100

1,550

2,700

Drought Emergency (L5)

520

1,100-1,650*

2,500-2,900*

NYC Storage Condition

Severe Drought

(to be negotiated depending upon conditions)

* Varies with time of year and location of salt front, in accordance with Table 2.

_____________________________________________________________________

78 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 2 Interstate Operation Formula for Adjusting Montague and Trenton Flow Objectives during Drought Emergency (L5) Operations

7-day average location of Salt Front*, River Mile** Upstream of R.M. 92.5 Between R.M. 87.0 and R.M. 92.5 Between R.M. 82.9 and R.M. 87.0 Downstream of R.M. 82.9

Flow objective, cubic feet per second at: Montague, NJ Trenton, NJ*** Dec- MaySeptDecMaySeptApr. Aug. Nov. Apr. Aug. Nov. 1,600 1,650 1,650 2,700 2,900 2,900 1,350 1,600 1,500 2,700 2,700 2,700 1,350 1,600 1,500 2,500 2,500 2,500 1,100 1,100 1,100 2,500 2,500 2,500

* Defined as the 250 milligrams per liter isochlor in the Delaware Estuary. **Measured in statute miles along the navigation channel from the mouth of Delaware Bay. *** The Trenton Equivalent Flow Objective is achieved if the sum of flows observed at the USGS Trenton gaging station, releases in excess of conservation releases from Blue Marsh Reservoir, and 70 cfs to account for bypass flows via Yardley and the Point Pleasant Pumping Station is greater than the Trenton Flow Objective listed above. Table 3 Schedule of Releases (cfs) during Drought Operations

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 79

Entry and Exit Criteria

Criteria for entry into and exit from the various stages of drought operations shall be in accordance with Section 2.5.3.E. of the Water Code. Normal (L2 or higher) level releases will be restored when combined storage in the City Delaware Basin Reservoirs reaches 25 billion gallons above the L3 curve in Figure 1 and remains at or above that level for 15 consecutive days. f.

Balancing Adjustment

In order to conserve water, the River Master is requested to utilize a balancing adjustment, based upon procedures agreed upon by the Decree Parties, when calculating the releases to be directed to meet the Montague flow objectives in Tables 1 and 2. Additionally, during Drought Warning, the amount of the conservation releases (L4) from the City Delaware Basin Reservoirs that is greater than the basic conservation releases rates as set forth in Table 1 of Docket D-77-20 (Revised) shall be considered as directed releases for the purpose of calculating the balancing adjustment. 6.

HABITAT PROTECTION PROGRAM a. Applicability and Management Objectives The overall management goal of the Habitat Protection Program (HPP) is to protect the cold water fishery while maintaining aquatic community diversity, structure, and function through improved ecological flow releases. A series of four categorical protection levels for describing cold water ecosystem management objectives for waters downstream of the City Delaware Basin Reservoirs was developed by New York and Pennsylvania fishery managers and is shown on Plate 1. These protection levels apply in non-drought years and are defined as follows: Excellent:

Excellent year-round cold water aquatic habitat protection. Summer water temperatures are routinely 68ºF or less and only very rarely exceed a daily maximum of 75ºF. Excellent protection level applies to the West Branch Delaware River from Cannonsville Reservoir to the junction with the East Branch Delaware River, the East Branch Delaware River from Pepacton Reservoir to the hamlet of East Branch, N.Y., and Neversink River from Neversink Reservoir to Bridgeville, N.Y.

Good:

River section provides cold water aquatic habitat and thermal protection and maintains opportunities for a cold water fishery. Summer water temperatures will occasionally exceed a daily maximum of 75ºF for short periods and water temperatures greater than 68ºF occur

80 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

more frequently than with the Excellent protection level. Elevated temperatures will occasionally be an issue. Good protection level applies to the Delaware River main stem from the junction of the West and East Branches to Lordville, N.Y. and the Neversink River from Bridgeville, N.Y. to the mouth of Eden Brook near Oakland Valley, N.Y. Moderate:

River sections will experience adequate flow and some thermal protection for cold water species. Seasonal opportunities for a cold water fishery will occur, but thermal benefits will diminish. Moderate protection level applies to the East Branch Delaware River from East Branch, N.Y. to the mouth of Corn Creek near Peas Eddy, N.Y., the Neversink River from the mouth of Eden Brook near Oakland Valley, N.Y. to the Sullivan/Orange County, N.Y. boundary, and the Delaware River main stem from Lordville, N.Y. to Hankins, N.Y.

Minimal:

River sections with this designation will experience adequate flow, but only limited thermal protection. The quality of the fishery will be generally seasonal and will vary from year to year. Flows should be adequate to allow trout to reach cold water refugia and to protect dwarf wedgemussel populations in the vicinity of Callicoon, N.Y. Minimal protection level applies to the East Branch Delaware River from the mouth of Corn Creek near Peas Eddy, N.Y. to the junction with the West Branch Delaware River, and the Delaware River main stem from Hankins, N.Y. to Callicoon, N.Y.

The Decree Parties recognize that the degree of protection in waters downstream of the City Delaware Basin Reservoirs will vary according to annual fluctuations in precipitation and temperature, reservoir releases rates, distance from the locations of reservoir releases, and tributary influences. Requirements for protection of the federally endangered dwarf wedgemussel are currently under study and are poorly defined.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 81

Plate 1 Extent and Protection Level of the Cold Water Ecosystem

82 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Controlled Releases for Habitat Protection Program

There is hereby established a Habitat Protection Program (HPP), which consists of conservation releases designed for the protection of the cold water fishery below the City Delaware Basin Reservoirs. The HPP is designed to make enhanced releases, above the base releases given in Table 4a, when an assessment by New York City, using its Operations Support Tool (OST), determines that additional water is available for releases and that any risk to the City’s water supply is at an acceptable level. The Base Releases table is designed for drought neutral minimum releases, i.e., no additional drought risk relative to DRBC Docket D-7720 Revised (Rev. 1), which can be maintained under Normal conditions, independent of inflow or the City’s demand. The City is using OST, a state-of-the-art forecast-driven analysis and decision support tool that will provides the City with probabilistic predictions of future system status. In addition to its principal objective of improving operational decision making in providing a reliable supply of high quality drinking water for 9 million people, OST also provides assurance that the actions taken to support downstream objectives, such as fish habitat, stream ecosystems, and better discharge mitigation, will not adversely impact water supply reliability. It allows the City to compare different sets of operating scenarios using real-time system information (e.g., reservoir levels, water quality, streamflows) and forecasts (e.g., streamflows, meteorological drivers) to evaluate the impacts on water supply reliability so that objective risk-based decisions can be made quickly and efficiently. Under this agreement the City will voluntarily make enhanced stream releases using the Forecast-based Available Water (FAW) as determined by an OST assessment and in accordance with Figures 1 and 2 and the appropriate FAW or the base releases shown in Table 4a. When the assessment indicates that no additional water is available, the City shall make releases in accordance with the currently sustainable base releases shown in Table 4a. The City is under no obligation to make enhanced releases beyond the base releases, when the risk to water supply, as determined by the City using its OST assessment, is unacceptable. Tables 4b through 4g present the releases tables under Normal conditions for pre-determined amounts of FAW. The City will make available to the Decree Parties the inputs to the OST model, the outputs from the model, and the releases table selection guidelines, including the forecasted probabilistic inflows, the status of the City Delaware Reservoirs, and the operational assumptions applicable to OST-based decisions. OST assessments shall be performed as frequently as necessary to confirm confidence in the selected FAW table but generally not less than monthly. Prior to making a releases table change, the City will provide notification, along with a general description of the rationale of such change to the Decree Parties, the River Master, and DRBC. The City shall provide the OST Summary Data, described above through the River Master’s website.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 83

As shown in Tables 4a through 4g, each reservoir has a schedule of seasonal releases based on the quantity of combined reservoir usable storage, and the quantity of water available for the HPP.

Figure 2 New York City Delaware System Usable Individual Storage (Cannonsville, Pepacton, and Neversink Reservoirs)

84 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 4a Schedule of Releases (cfs) during Normal Conditions Base Releases with no Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below.

Table 4b Schedule of Releases (cfs) during Normal Conditions Releases with 10 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 85

Table 4c Schedule of Releases (cfs) during Normal Conditions Releases with 20 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below.

Table 4d Schedule of Releases (cfs) during Normal Conditions Releases with 35 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below.

86 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Table 4e Schedule of Releases (cfs) during Normal Conditions Releases with 50 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below.

Table 4f Schedule of Releases (cfs) during Normal Conditions Releases with 75 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below. + Second entry after slash indicates reduction in release rate for New Jersey Diversion Offset Bank.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 87

Table 4g Schedule of Releases (cfs) during Normal Conditions Releases with 100 mgd Forecast-based Available Water (FAW)

* Indicates storage zone not present at this time period; release is entry in cell below. + Second entry after slash indicates reduction in release rate for New Jersey Diversion Offset Bank.

DISCHARGE MITIGATION PROGRAM

In order to enhance flood mitigation provided by the City Delaware Basin Reservoirs, NYC agrees to establish a Conditional Seasonal Storage Objective (CSSO) rule curve in Figure 2. Consistent with good practices for water supply reservoirs, and in order to ensure that sufficient resources are available during an extended dry period to support both lower basin and NYC needs, it is essential to ensure that the City Delaware Basin Reservoirs are filled on or around June 1st every year. To accomplish this, the CSSO (boundary between the L1-b and L1-c storage zones in Figure 2) must be limited and ramped. For the duration of the current program NYC shall endeavor, to the maximum extent possible without impacting water supply reliability, to maintain reservoir levels at the CSSO, thus creating a high probability of maintaining ten (10) percent void spaces from September 1, 2014 through March 15, 2015 to help mitigate flooding events. In determining the releases needed to maintain the CSSO, the following parameters are considered in the OST evaluation: forecasted inflows over the next seven (7) days, FAW table releases in effect over the next seven (7) days, anticipated diversions over the next seven (7) days, snow water equivalent in the watershed ranging from 50 percent to 100 percent as appropriate, and the current usable reservoir storage. Based on any projected seven (7) day storage surplus, new release rates, above the FAW table releases in effect, are calculated and spread over the upcoming 7-day period, within the limitations of the release works for each reservoir.

88 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Discharge Mitigation Program releases are designed to help mitigate the effects of flooding immediately below the City Delaware Basin Reservoirs. When the combined reservoir usable storage in Figure 1 is in Zone L1, the spill mitigation zone, Figure 2 defines three zones of reservoir-specific storage (L1-a, L1-b and L1-c) relative to two rule curves for each reservoir. Tables 4a through 4g further define spill mitigation releases based on reservoir-specific storage when combined storage is in Zone L1. When combined usable reservoir storage is below Zone L1, reservoir-specific storage zones as defined in Figure 2 are not applicable, and the releases to be made, as set forth in the tables, are for conservation purposes only. The City shall make discharge mitigation releases from the City Delaware Basin Reservoirs in accordance with the following: i. For the period June 16 through April 30, if combined reservoir usable storage is in Zone L1 in accordance with Figure 1, discharge mitigation releases shall be made based upon individual reservoir usable storage in accordance with Zones L1-a, L1-b and L1-c as provided in Figure 2 and Tables 4a through 4g. During the period October 1 through April 30: a. Fifty percent (50%) of the water equivalent of snow pack in the watersheds above the reservoirs shall be included in the determination of combined and individual reservoir usable storage in relation to Figures 1 and 2. b. If, as a result of the combination of current snow pack and predicted meteorological conditions, in the opinion of the New York City Department of Environmental Protection (NYCDEP) any reservoir is anticipated to spill within a period of seven (7) days, then upon notification by NYCDEP to the Decree Parties, the River Master, and DRBC, NYCDEP may, in consideration of possible downstream impacts and the stage and discharge thresholds given in Section 6.a. and Table 5, herein, include up to one hundred percent (100%) of the water equivalent of snow pack in the watersheds above the reservoirs in the determination of combined and individual reservoir usable storage in relation to Figures 1 and 2, unless and until any Decree Party shall notify the NYCDEP, the River Master, and DRBC of its objection to such inclusion. As soon as practicable, NYCDEP shall transition back to the fifty percent (50%) snow pack water equivalent criterion with notification to the Decree Parties, the River Master, and DRBC. ii. For the period May 1 through June 15, Zones L1-a and L1-b shall not be applicable in accordance with Figure 2, and discharge mitigation releases shall be made in accordance with Zone L1-c as provided in Figure 2 and Tables 4a through 4g. iii. The NYCDEP and the New York State Department of Environmental

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 89

Conservation (NYSDEC) reservoir releases managers, upon mutual agreement, may transfer spills to bottom releases to the extent possible at any reservoir. iv. The current National Weather Service (NWS) flood stage for the West Branch Delaware River at Hale Eddy is 11.0 feet. Accordingly, Zone L1discharge mitigation releases will not be made from Cannonsville Reservoir when the river stage for the West Branch Delaware River at Hale Eddy is above 9.0 feet, or is forecasted to be above 9.0 feet within 48 hours of planned discharge mitigation releases, and releases shall be made in accordance with Zone L2 through L5 as provided in Tables 4a through 4g. This guidance may be modified at any time upon unanimous consent by the Decree Parties, if additional information demonstrates that a different cautionary stage should be used to limit the discharge mitigation releases. v. The current NWS flood stage for the East Branch Delaware River at Fishs Eddy is 13.0 ft. Accordingly, Zone L1 discharge mitigation releases will not be made from Pepacton Reservoir when the river stage for the East Branch Delaware River at Fishs Eddy is above 11.0 ft. or is forecast to be above 11.0 ft. within 48 hours of planned discharge mitigation releases, and releases shall be made in accordance with Zone L2 through L5 as provided in Tables 4a through 4g. This guidance may be modified at any time upon unanimous consent by the Decree Parties, if additional information demonstrates that a different cautionary stage should be used to limit the discharge mitigation releases. vi. The current NWS flood stage for the Neversink River at Bridgeville is 13.0 feet. Accordingly, Zone L1 discharge mitigation releases will not be made from Neversink Reservoir when the river stage for the Neversink River at Bridgeville is above 12.0 feet, or is forecast to be above 12.0 feet within 48 hours of planned discharge mitigation releases, and releases shall be made in accordance with Zone L2 through L5 as provided in Tables 4a through 4g. This guidance may be modified at any time upon unanimous consent by the Decree Parties, if additional information demonstrates that a different cautionary stage should be used to limit the discharge mitigation releases. vii. Discharge mitigation releases may be suspended from the respective reservoir if NYCDEP and NYSDEC, in consultation with the NWS, determine that ice conditions threaten flood prone areas of the West Branch Delaware River below Cannonsville Reservoir, East Branch Delaware River below Pepacton Reservoir, or Neversink River below Neversink Reservoir. viii. Discharge mitigation releases will be designed so that the combined discharge from each reservoir’s controlled release works and spillway does not exceed the maximum rate given in Table 5 below. Respective controlled releases will be reduced to L2 releases in Tables 4a through 4g, or lower. ix. To more naturally effect downward or upward transitions between discharge mitigation releases rates identified in Tables 4a through 4g, discharge mitigation releases rates may be ramped, in cooperation with NYSDEC, generally over a period of three days at Cannonsville and Pepacton Reservoirs, and two days at Neversink Reservoir.

90 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

x. Modifications to the program necessary to accommodate emergencies, maintenance and repair operations or short-term needs are addressed herein in Section 17, Temporary Suspension or Modification. Table 5 Maximum Combined Discharge Rates Reservoir

Maximum Combined Discharge Rate (cfs)

Neversink 3,400 Pepacton 2,400 Cannonsville 4,200 ____________________________________

SALINITY REPULSION New York City will provide releases to protect the lower basin water supply from salt water movement up the Delaware River in accordance with Table 2 of the Interstate Water Management Recommendations of the Parties to the U.S. Supreme Court Decree of 1954 to the Delaware River Basin Commission pursuant to Delaware River Basin Commission Resolution 78-20 (Good Faith Agreement). As stipulated in the Good Faith Agreement and in accordance with Table 2, herein (Interstate Operation Formula For Adjusting Montague And Trenton Flow Objectives During Drought Emergency (L5) Operations), the City shall make releases to meet the Montague flow objectives according to the location of the salt front.

DWARF WEDGEMUSSELS The Decree Parties will consider any modifications to the current program that may be necessary to avoid taking, harming, or adversely affecting dwarf wedgemussels based upon information from the U.S. Fish and Wildlife Service (USFWS). Studies currently underway by the USFWS and the USGS may inform such modifications, as new information becomes available. These studies will attempt to quantify any relationship between surface water discharge and groundwater flow and temperature at known dwarf wedgemussel sites in the upper Delaware during low flow conditions.

10.

LAKE WALLENPAUPACK The Decree Parties and the DRBC will consider any modifications to the Lake Wallenpaupack operations plan (DRBC Resolution 2002-33) proposed by the operators of Lake Wallenpaupack, if deemed feasible.

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 91

11.

RECREATIONAL BOATING The Decree Parties and the DRBC will review and evaluate proposed reservoir releases programs for supporting recreational boating activities in the upper basin, if deemed feasible.

12.

ESTUARY AND BAY ECOLOGICAL HEALTH The Decree Parties and the DRBC will review and evaluate available data during the implementation of the current program and will consider any modifications that may be necessary to maintain the ecological health of the Delaware Estuary and Bay including that of oysters, shellfish and endangered species. The focus of this FFMP element includes the upper Delaware Estuary, lower Delaware Estuary, and Delaware Bay, and such modifications shall be considered in accordance with the criteria described in Section 1.c.

13.

WARM WATER AND MIGRATORY FISH The Decree Parties and the DRBC will review and evaluate available information on the effects of implementation of the current program on warm water fishes that are found in the Delaware River and will consider any modifications to conserve native species of special concern and migratory species.

14.

MONITORING AND REPORTING During the term of this Agreement, temperature monitoring and accounting of IERQ use will be conducted as follows: a.

Temperature: During the one-year term of the current Agreement, NYSDEC shall monitor water temperatures within the stream reaches defined and categorized in Section 6. NYSDEC will submit to the Decree Parties and to the DRBC, by April 30, 2015, a scientific report summarizing the observed temperatures and assessing biological implications with respect to the stated management goal and defined protection levels of the HPP.

IERQ: In order to assess the extent to which the downbasin parties’ rights in the IERQ are preserved under this Agreement, the River Master shall maintain an accounting of the quantity of daily releases from the NYC reservoirs in accordance with Tables 4a through 4g which are attributable to the 3.91 billion gallons (6,045 cfs-days) IERQ component of the tables.

92 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

15.

REASSESSMENT STUDY Decisions on the conduct of a water resources reassessment study will be informed by experience gained during the operation of the current program.

16.

PERIODIC EVALUATION AND REVISION The Decree Parties agree that during the entire effective period of this Agreement, as monitoring, reporting, and evaluation may show to be appropriate, the provisions of this Agreement specifying triggers for, and quantities of, releases may be revised through an adaptive management process to further enhance the overall natural resource and economic benefits derived from the releases from the City Delaware Basin Reservoirs. Any resultant action taken shall be subject to the unanimous approval of the Decree Parties. New York City will continue to collaborate with the Decree Parties in the development of the OST as a flow management tool.

17.

TEMPORARY SUSPENSION OR MODIFICATION From time to time, the Decree Parties and the DRBC may agree that emergencies, maintenance and repair operations, short-term needs, or unanticipated effects of the FFMP may require temporary suspension or modification of one or more of the provisions herein. In considering such temporary suspensions or modifications, the Decree Parties and the DRBC may estimate probabilities and risks associated with such temporary suspensions or modifications. Any resultant action taken, other than modifications to the releases as provided below, shall require the unanimous approval of the Decree Parties. The City shall provide reasonable advance notification to the Decree Parties, River Master and DRBC of any planned long-term cessation of diversions and/or changes in releases due to emergencies, maintenance and repair operations including possible tunnel shut downs. The City shall establish the scope of work and the work schedule for maintenance and repair operations and shall inform the Decree Parties and the DRBC of such plans as early as practicable. In the absence of unanimous approval of a modified releases schedule as may be required for purposes of necessary maintenance and repair, the City, acting in cooperation with the NYSDEC, will make releases to the best of its ability for the duration of the maintenance or repair work, provided, however, that releases shall be sufficient to meet the Montague flow objective in effect at the time. Modifications to releases not to exceed seven (7) consecutive days for purposes of maintenance or repair of immediate necessity, or to avoid unreasonable fluctuations in

Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 93

releases, shall not require Decree Party approval, but shall be done in cooperation with NYSDEC, provided, however, that releases shall be sufficient to meet the Montague flow objective in effect at the time. 18.

RESERVATIONS Nothing contained herein shall be deemed to constitute a waiver or modification of, or limitation on, the Decree Parties rights under the Decree. This Agreement shall not be cited as precedent of any intention to waive or modify or limit such rights. The Decree Parties have authorized certain actions, including but not limited to discharge mitigation releases, in this Agreement to assist in mitigating the impacts of flooding immediately below the NYC Delaware Basin Reservoirs. By incorporating flood mitigation as an objective and taking the actions provided herein, the Decree Parties do not create or assume any duties or obligations regarding flood mitigation or in any way modify any such duties or obligations that may be otherwise prescribed by law.

19.

EFFECTIVE DATE This Agreement shall take effect upon unanimous approval of the Decree Parties and shall expire on May 31, 2015, unless renewed as provided for in Section 20, or if the expiration date is revised.

20.

RENEWAL AND REVISION This Agreement may be revised only through the unanimous written agreement of the Decree Parties. This Agreement, and any unanimously agreed to revisions, may be renewed for an additional one-year period beginning June 1, 2015 by unanimous written agreement of the Decree Parties. If this Agreement is not renewed for an additional oneyear period, prior to May 31, 2015, the Decree Parties agree to enter into good faith negotiations to determine a course of action in the absence of such renewal, as provided in Section 21, below.

21.

REVERSION Upon any failure by all Decree Parties to continue this Agreement, and any revisions to this Agreement, in accordance with Section 20, operations shall revert to those provided in DRBC Docket D-77-20 CP (Revised).

94 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014

STATE OF DELAWARE The State of Delaware hereby approves this Agreement of the Parties to the U.S. Supreme Court Decree of 1954 for a Flexible Flow Management Program with Operations Support Tool integration and recommends that this Agreement be submitted to the Delaware River Basin Commission for implementation as appropriate through rules, dockets and/ or resolutions, subject in each instance to the further agreement of the Parties as required by Section 3.3(a) of the Delaware River Basin Compact.

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Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 95

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014

STATE OF NEW JERSEY The State of New Jersey hereby approves this Agreement of the Parties to the U.S. Supreme Court Decree of 1954 for a Flexible Flow Management Program with Operations Support Tool integration and recommends that this Agreement be submitted to the Delaware River Basin Commission for implementation as appropriate through rules, dockets and/ or resolutions, subject in each instance to the further agreement of the Parties as required by Section 3.3(a) of the Delaware River Basin Compact.

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96 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014

CITY OF NEW YORK The City of New York hereby approves this Agreement of the Parties to the U.S. Supreme Court Decree of 1954 for a Flexible Flow Management Program with Operations Support Tool integration and recommends that this Agreement be submitted to the Delaware River Basin Commission for implementation as appropriate through rules, dockets and/ or resolutions, subject in each instance to the further agreement of the Parties as required by Section 3.3(a) of the Delaware River Basin Compact.

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Appendix 1. Agreement of the Parties to the 1954 U.S. Surpreme Court Decree Effective June 1, 2014 97

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014

STATE OF NEW YORK The State of New York hereby approves this Agreement of the Parties to the U.S. Supreme Court Decree of 1954 for a Flexible Flow Management Program with Operations Support Tool integration and recommends that this Agreement be submitted to the Delaware River Basin Commission for implementation as appropriate through rules, dockets and/ or resolutions, subject in each instance to the further agreement of the Parties as required by Section 3.3(a) of the Delaware River Basin Compact.

____________________________________

98 Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

Agreement of the Parties to the 1954 U.S. Supreme Court Decree Effective June 1, 2014

COMMONWEALTH OF PENNSYLVANIA The Commonwealth of Pennsylvania hereby approves this Agreement of the Parties to the U.S. Supreme Court Decree of 1954 for a Flexible Flow Management Program with Operations Support Tool integration and recommends that this Agreement be submitted to the Delaware River Basin Commission for implementation as appropriate through rules, dockets and/ or resolutions, subject in each instance to the further agreement of the Parties as required by Section 3.3(a) of the Delaware River Basin Compact.

____________________________________

For more information about this report, contact: Delaware River Master Office of the Delaware River Master U.S. Geological Survey 120 Route 209 South Milford, PA 18337 Or visit our website at: https://webapps.usgs.gov/odrm/ Publishing support provided by the Reston Publishing Service Center

Russell and others—Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014—OFR 2023–1084

ISSN 0196-1497 (print) ISSN 2331-1258 (online) https://doi.org/10.3133/ofr20231084

Report of the River Master of the Delaware River for the Period December 1, 2013–November 30, 2014

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