Low Flow Criteria for Diversions and Impoundments

by Sie Ling Chiang, (M.ASCE), Chf. of Environmental and Safety Section; Office of Area Geothermal Supvr., U.S. Geological Survey, Menlo Park, Calif.; formerly, Planning Chf., Div. of Comprehensive Resources Programming, Dept. of Environmental Resources, Harrisburg, Pa.,
Fred W. Johnson, Water Resources Coordinator; Pennsylvania Fish Commission, Bellefonte, Pa.,

Serial Information: Journal of the Water Resources Planning and Management Division, 1976, Vol. 102, Issue 2, Pg. 227-238

Document Type: Journal Paper

Abstract: Low flow criteria for impoundments and diversions were formulated through a multidisplinary task force and are being used by the State of Pennsylvania. Watershed size, low flow yield of the stream, reservoir capacity, and water quality were considered in the formulation of the criteria. The criteria were implemented using a simple chart which provides a transition from an impoundment to a diversion. The techniques used to arrive at the chart and formula are applicable to reservoirs and diversions elsewhere.

Subject Headings: Low flow | Water storage | Reservoirs | Water quality | Water flow | Watersheds | Rivers and streams | Pennsylvania | North America | United States

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