Agricultural Water Use Efficiency and Water Supply

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by James K. Koelliker, Kansas State Univ, Manhattan, KS, USA,

Document Type: Proceeding Paper

Part of: Hydraulics and Hydrology in the Small Computer Age:

Abstract: Effects of improved agricultural practices on non-irrigated areas were determined in a 4000-mi**2 drainage area above Milford Reservoir in Kansas, by use of a continuous computer simulation water budget model of various land uses and practices. Results show that changes on non-irrigated areas have reduced total potential streamflow by 15 percent and are projected to increase to 22 percent by 2025. These practices plus past and continued development of irrigation (both from surface and groundwater) are estimated to have reduced the reliable water supply capacity of Milford Reservoir by 25 percent and are projected to decrease the original design yield by 40 and 50 percent in 2000 and 2025, respectively.

Subject Headings: Water supply | Water conservation | Water use | Irrigation water | Computer aided design | Reservoirs | Computer analysis | Computer models | Hydrologic models | North America | Kansas | United States

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