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c. Flood bydro~phs. Hydro~phs at selected gaging stations along the main stem or thl! Platte River ror the April to July period are shown on plates 23 to 25. The estimated bydrographs that would have occurred under natural flow conditions in the Platte River basin are also shown on these plates. 15. FLOO)) DAMAGES PREVENTED a. Federal pro.1ects. Federat flood-control projects in the Platte River basin include the Corps or Engineers' Kell~ Road Detention Dam in Aurora, Colot'ado and Cherry Creek Dam southeast of ' Denver. In Nebraska, Operation "Foresi!',ht" levees, constructed under supervision or the Corps at Scottsblurr and at Bridge:port during the 1971 floo'i emergency, were credited with preventing rlood damages at those communities during the 1973 flood on the North Platte River. Bureau or Reclamation projects in Wyoming include Seminoe, Pathrinder, Alcova, Glendo, and Guerns~ Dsms, or which only Glendo has specific flood- control storage. Damage prevention benerits attributed to these projects are described in the following paragraphs. b. The Kell~ Road Detention Dam provides protection for a 500-acre area; the project is credited with preventing $12,000 in flood damages. Cherry Creek Dam, located on Cherry Creek southeast of Denver, protects abo~t 750 acres along the creek plus another 14,000 acres along tl'\e South Platte River. Dllring the 1973 flood, the project liaS credited with preventing $27,000,000 in flood damages. Operation "Foresight" levees built at Scottsblufr and at Bridgeport in 1971 were credited with preventing damages estimated at $230,000 and $90,000 respectively during the 1973 flooll.. c. The Bureau or ReclamatioI\ dams are credited with nood damage prevention as listed below: Reservoir Flood Damap;es Prevented TOTAL $3,106,700 567,300 36,000 2,446,000 267,000 $6,423,000 Seminoe Pathfinder Alcova Glendo Guernsey 28