Non-point Source Policies for Agricultural Drainage

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by Dennis W. Westcot,
Joe Karkoski,
Rudy Schnagl,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water:

Abstract: There is limited experience in regulating the water quality impacts of nonpoint source subsurface agricultural drainage discharges. Recent efforts in California to regulate selenium discharges have met with mixed success. A program to encourage best management practice (BMP) implementation through water conservation lead to increases in irrigation efficiency with mixed success in improving water quality. Future efforts must concentrate on: l)clearly defining the environmental goal; 2) identifying responsibility of the individual dischargers to meet water quality needs; and 3) providing the flexibility and incentive to meet water quality goals.

Subject Headings: Drainage | Water quality | Agriculture | Water discharge | Water conservation | Best Management Practice | Subsurface drainage | Selenium | Irrigation water | Nonpoint pollution | North America | California | United States

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