106 STAT. 4724 PUBLIC LAW 102-575—OCT. 30, 1992 (A) alternative means of improving the reliability and quality of water supplies currently available to privately owned, wetlands in the Central Valley and the need, if any, for additional supplies; and (B) water supply and delivery requirements necessary to permit full habitat development for water dependent wildlife on one hundred and twenty thousand acres supplemental to the existing wetland habitat acreage identined in Table 8 of the Central Valley Habitat Joint Venture's "Implementation Plan" dated April 19, 1990, as well as feasible means of meeting associated water supply requirements. (e) SUPPORTING INVESTIGATIONS.— Not later than five years after the date of enactment of this title, the Secretary shall investigate and provide recommendations to the Committee on Energy and Natural Resources of the Senate and the Committees on Interior and Insular Affairs and Merchant Marine and Fisheries of the House on the feasibility, cost, and desirability of developing and implementing each of the following, including, but not limitea to, the impact on the project, its users, and the State of California: (1) measures to maintain suitable temperatures for anadromous fish survival in the Sacramento and San Joaquin rivers and their tributaries, and the Sacramento-San Joaquin Delta by controlling or relocating the discharge of irrigation return flows and sewage effluent, and by restoring riparian forests; (2) opportunities for additional hatchery production to mitigate the impacts of water development and operations on, or enhance efforts to increase Central Valley fisheries; Provided, That additional hatchery production shall only be used to supplement or to re-establish natural production while avoiding adverse effects on remaining wild stocks; (3) measures to eliminate barriers to upstream and downstream migration of salmonids in the Central Valley, including but not limited to screening programs, barrier removal programs and programs for the construction or rehabilitation of fish ladders on tributary streams; (4) installation and operation of temperature control devices at Trinity Dam and Reservoir to assist in the Secretary's efforts to conserve cold water forfisheryprotection purposes; (5) measures to provide for modified operations and new or improved control structures at the Delta Cross Channel and Georgiana Slough to assist in the successfiil migration of anadromousfish;and (6) other measures which the Secretary determines would protect, restore, and enhance natural production of salmon and steelhead trout in tributary streams of the Sacramento and San Joaauin Rivers, including but not limited to the Merced, Mokulumne, and Calaveras Rivers and Battle, Butte, Deer, Elder, Mill, and Thomes Creeks. (f) REPORT ON PROJECT FISHERY IMPACTS.—The Secretary, in consultation with the Secretary of Commerce, the State of California, appropriate Indian tribes, and other appropriate public and private entities, shall investigate and report on all efiects of the Central Valley Project on anadromous nsh populations and the fisheries, communities, tribes, businesses and other interests and entities that have now or in the past had significant economic, social or cultural association with those fishery resources. The Sec-
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