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; . l..,!;).r..;) 0""'....; V. OPERATION PLAN FOR WATER YEAR 1988 A. Genera 1 Detai led monthly operation studies have been made for the four reservoirs in the Project system (assumes Twin Lakes/Mt. Elbert Forebay as one reservoir) which simulate the proposed operation for water year 1988. In preparing the operation studies, flexibility has been allowed for changes in the inflow or outflow as conditions warrant. Forecasts of the April through July Ruedi Reservoir inflow as well as projected Project imports for Turquoise Lake will be started on February 1 and continue on the first of each succeeding month through May 1. The contract with the District requires notification be given to the District by May 15 of the quantity of water available for their use through April 30, 1989. B. Ruedi Reservoir . Ruedi Reservoir will be operated in water year 1988 to control the Apri 1 through September runoff which is projected to be 121,100 acre- feet based on the April 1, 1988 forecast. The reservoir will provide maximum storage for use by recreational interests, for fish and wildlife enhancement and for making on-demand releases of contracted water. This is an interim plan until a long-term market is developed for all the available stored water. Short-term sales may be made on a year-to-year basis as the need develops for water. The planned releases from Ruedi Reservoir are for about 130 cubic feet per second until late January, then increase to 200 cubic feet per second until the end of April which would draw the reservoir down to an elevation of 7710 feet. However, based upon the type of runoff season indicated by monthly snowpack data, the outflow from the reservoir and the target elevation may be adjusted. Monthly estimates of probable inflow would be made following the February I through May 1 runoff forecasts. The minimum release requirements, as described in the operating prin- ciples, are 39 cubic feet per second from November 1 through April 30 and 110 cubic feet per second from May 1 through October 31 or nat ive inflow, whichever is less. These flows include water from Rocky Fork. . Recreation interests requested that the reservoir water level not be drawn down below elevation 7706 feet (53,100 acre-feet), which is 2 feet above the bottom of the Forest Service boat ramp. The Operating Plan indicates that the reservoir will be filled by about June 30, thus providing recreational benefits during the summer months. 21