Gains and Losses of Commingled Waters in a Stream

by R. D. Mac Nish, US Geological Survey, Tucson, AZ, USA,



Document Type: Proceeding Paper

Part of: Development and Management Aspects of Irrigation and Drainage Systems

Abstract: In a legal dispute in the State of Washington (Colville Confederated Tribes vs. Boyd Walton, Jr. , Farmer), it became necessary to determine the proportion of transmission losses sustained by developed water that was commingled with native water in a natural stream channel. Ground-water pumping and irrigation adjacent to the stream resulted in both gains and losses to flow along the study reach. The identification of the native and developed waters was accomplished by a detailed study of the reach that combined current-meter measurements with an analysis of the dilution of an injected brine.

Subject Headings: Water management | Rivers and streams | Salt water | Flow measurement | Groundwater flow | Irrigation | Stream channels | Power transmission | Pumps | Washington | North America | United States

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