33 U.S.C. § 405
The provisions of section 404 of this title are made applicable to the Potomac and Anacostia Rivers, and after , harbor lines in the District of Columbia, or elsewhere on said rivers, shall be established or modified as therein provided.
(July 25, 1912, ch. 253, § 1, 37 Stat. 206.)
Section is from part of section 1 of act , popularly known as the “Rivers and Harbors Appropriation Act of 1912”.