So much as may be necessary of any appropriations made for specific portions of New York Harbor and its immediate tributaries may be allotted by the Secretary of the Army for the maintenance of these waterways by the collection and removal of drift.
(Aug. 8, 1917, ch. 49, § 1, 40 Stat. 252; July 26, 1947, ch. 343, title II, § 205(a), 61 Stat. 501.)