Nothing contained in sections 401 , 403 , 404 , 406 , 407 , 408 , 409 , 411 to 416 , and 502 of this title shall be construed as repealing, modifying, or in any manner affecting the provisions of subchapter III of this chapter. (Mar. 3, 1899, ch. 425, § 20(a), formerly § 20, 30 Stat. 1154 ; Feb. 20, 1900, ch. 23, § 3, 31 Stat. 32 ; June 13, 1902, ch. 1079, § 12, 32 Stat. 375 ; renumbered § 20(a), Pub. L. 99–662, title IX, § 939(b) , Nov. 17, 1986 , 100 Stat. 4199 .) Editorial Notes References in Text Subchapter III ( § 441 et seq.) of this chapter, referred to in text, was in the original a reference to the Act of June 29, 1888 , as amended by section 3 of the river and harbor Act of August 18, 1894 . Codification Section is from part of section 20(a) of act Mar. 3, 1899 , popularly known as the “ Rivers and Harbors Appropriation Act of 1899 ”. See Codification and Amendment notes set out under section 415 of this title . CFR Title Parts 33 320 , 325 , 326 , 329 , 330 , 331