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. .. t"~'" J lUll. ANNUAL OPERATING PLAN FRYINGPAN-ARKANSAS PROJECT, COLORADO WATER YEAR 1984 OPERATIONS WATER YEAR 1985 OUTLOOK I. GENERAL This report is the sixteenth Annual Operating Plan for the Fryingpan-Arkansas Project. The project is essentially complete and consists of federally owned dams, reservoirs, conduits, tunnels, pumping plants, a pumped-storage powerp1ant, electric transmission lines, substations, and other facilities. These features are located in the Fryingpan River and Hunter Creek drainage areas of the Colorado River Bas i n and in the Arkansas River Bas i n in central and southeastern Colorado. The only feature to be completed is the Fountain Valley Conduit. These extensive works will provide orderly and beneficial use of water for irrigation, hydroelectric power generation, municipal and industrial uses, flood control, and other incidental benefits, such as fish and wildlife pre- servation and recreation. . This report provides the basis for increased cooperation and understanding among all concerned with the coordinated operation of the project. The report has two main parts. The first part reports the results of actual operations in water year 1984 (October 1, 1983, to September 30, 1984). The second part presents operatin9 plans for water year 1985 (October 1, 1984, to September 30, 1985). The most probable condition of water supply was used in establishing the general plan for future operations. This condition of water supply was derived by statistical analysiS of historical water supply data. After review of the monthly snow surveys prepared by the Soil Conservation Service, the plan will be revised based on the projected water supply. The project was authorized under Publ ic Law 87-590, 87th Congress, H.R. 2206, on August 16, 1962. This law provides that the project will be operated under the Operatin9 Principles adopted by the state of Colorado on April 30, 1959, as amended December 30, 1959, and December g, 1960. These Operating Principles were published by the 87th Congress, 1st Session, as House Document 130. II. PROJECT FEATURES IN OPERATION DURING WATER YEAR 1984 In water year 1984 the project features in operation were Ruedi Dam and Reservoir; Sugar Loaf Dam and Turquoise Lake; Twin Lakes Dam and Twin Lakes; Mt. Elbert Forebay; Mt. Elbert Pumped-Storage Powerplant; Mt. Elbert Conduit; Pueblo Dam and Reservoir; Charles H. Boustead, Hunter, Carter, Mormon, South Fork, Chapman, Nast, and Cunningham Tunnels; and Halfmoon diversion and the sixteen west slope diversions, . 1