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<br />the Wyoming-Nebraska State lin~ were provided by flood impound- <br />ment in the Bureau of Reclamatton reservoirs and in the flood- <br />control zone of Glendo Reservotr. Additional reductions of <br />5,000 cubic feet per second by irrigation diversions and 4,000 <br />cubic feet per second by storaee impoundment in Lake McConaughy <br />were accomplished. This decreased flood stages by about 4 feet <br />on the North Platte River and ~ about 2 feet on the Platte River. <br /> <br />24. SOUTH PLATTE RIVER lilllERVClIR REGULATION <br /> <br />a. General. A number of reservoirs have been constructed <br />in the South Platte River basin for water supply, for irrigation, <br />and for flood control. Table:l.9 lists the principal reservoirs <br />in the basin. During the 1973 high-water period, the Corps of <br />Engineers' Cherry Creek Lake n~r Denver was the only reservoir <br />with space allocated for flood control. Chatfield Dam and <br />Reservoir, currently under con~truction by the Corps of Engineers <br />on 'the South Platte River upstl"eam from Denver, j,s the only other <br />reservoir with allocated flood~ontrol storage. Embankment <br />closure was made in August 197:'3. Because construction of the <br />dam and emergency spillway has not been completed, however, the <br />project will not be available tor planned storage impoundment <br />until late in 1974. During th<:! 1973 flood, the Chatfield <br />project sustained an estimated $350,000 in damages to the <br />embankment closure and spillwa:r section. Construction on the <br />project was delayed by about 5~ days, resulting in lost or <br />deferred income to contractors aJOC>unting to an estimated <br />$320,300. <br /> <br />40 <br />