United States Code Title 33 — Navigation and Navigable Waters §§ 431 to 437. Repealed. Pub. L. 91–224, title I, § 108, Apr. 3, 1970, 84 Stat. 113 §§ 431 to 437. Repealed. Pub. L. 91–224, title I, § 108, Apr. 3, 1970, 84 Stat. 113