Clean Water Act Amendments of 1983

[AI summary unavailable — showing source text] Clean Water Act Amendments of 1983 - Amends the Clean Water Act ("the Act") to extend the authorization of appropriations for specified programs under the Act through FY 1987. Directs the Administrator of the Environmental Protection Agency, at the request of the Governor of a State affected by the interstate management plan developed under the Chesapeake Bay program, to make a grant to implement management mechanisms in the plan if the State has, within one year after the date of enactment of this Act, approved and committed to implement all or substantially all aspects of the plan. Limits such grants to 55 percent of the plan implementation costs in any year and requires State expenditure of non-Federal funds to cover at least 45 percent of such costs during such fiscal year. Directs the Administrator to continue the Chesapeake Bay program for: (1) assessing the relationship between point and nonpoint source pollution and the impact of such pollution on water quality; and (2) research on the impact of pollutant loadings, particularly nutrients, on bay fisheries resources (with special attention to be given to the striped bass). Directs the Administrator to immediately begin to: (…