Design of Selective Withdrawal Intake Structuresby Jeffrey P. Holland, US Army Engineer Waterways, Experiment Station, Hydraulics Lab, Vicksburg, MS, USA,
Abstract: An overview is presented of the general methodology used by the U. S. Army Corps of Engineers in the design of selective withdrawal intake structures. Considered are the types of structures generally used by the Corps; the computation of the distribution of withdrawal for a given intake from a density-stratified reservoir; the optimum location of selective withdrawal intakes; and the hydraulic constraints which must be satisfied for effective structure flow control. The use of a reservoir outlet works incorporating multilevel selective withdrawal structures is a primary method for the control of reservoir release quality. These structures release water from various vertical strata in a density-stratified lake, thereby allowing, through blending or direct release, greater water quality control.
Subject Headings: Water intakes | Water quality | Reservoirs | Structural control | Density stratification | Quality control | Federal government
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