Non-point Source Policies for Agricultural Drainage

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

Document Type: Proceeding Paper

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


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: Water quality | Irrigation water | Agricultural wastes | Water conservation | Drainage | Water discharge | Subsurface drainage | Water management | California | United States

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