Subsec. (a) authorized the Administrator, in cooperation with the States and Federal agencies, to prepare a report describing the specific quality, during 1973, of all navigable waters and waters of the contiguous zone, including an inventory of all point sources of discharge of pollutants into these waters, and identifying those navigable waters capable of supporting fish and wildlife populations and allowing recreational activities, those which could reasonably be expected to attain this level by 1977 or 1983, and those which could attain this level sooner, and submit this report to Congress on or before Jan. 1, 1974.

1977—Subsec. (b)(1). Pub. L. 95–217, § 52(1), substituted “April 1, 1975, and shall bring up to date by April 1, 1976, and biennially thereafter” for “January 1, 1975, and shall bring up to date each year thereafter” in provisions preceding subpar. (A).

Subsec. (b)(2). Pub. L. 95–217, § 52(2), substituted “on or before October 1, 1975, and October 1, 1976, and biennially thereafter” for “on or before October 1, 1975, and annually thereafter”.