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<br />2 <br /> <br /> <br />0805 <br /> <br />any firm contracts for sale of storage water, Thus, Ruedi <br />Reservoir will be limited to beneficial use from flood control, <br />fish and wildlife, and recreation, while Turquoise Lake will be <br />used for the regulation of nonproject water and fish and wildlife <br />enhancement, <br /> <br />The purpose of this report is to provide a basis for increased <br /> <br />cooperation and understanding among all concerned with the <br /> <br />coordinated operation of the project. <br /> <br />The report has two main parts, One part is historical and reports <br /> <br /> <br />the results of actual operations through water year 1969, The other <br /> <br /> <br />presents operation plans for water year 1970, <br /> <br />In establishing the general plan for future operations, three possi- <br /> <br /> <br />bilities are considered: (1) a reasonable maximum water supply <br /> <br /> <br />which might be expected, (2) a reasonable minimum, and (3) the most <br /> <br /> <br />probable supply. These three conditions of water supply are derived <br /> <br /> <br />by statistical analysis of historical water supply data. Statisti- <br /> <br /> <br />cally, there is one chance in ten that the actual runoff will either <br /> <br /> <br />be greater or less than the volumes indicated as reasonable maximum <br /> <br />and reasonable minimum, Annual inflow of a magnitude equaled or <br /> <br /> <br />exceeded 50 percent of the time is considered the most probable <br /> <br /> <br />supply. Exhibits 1 and 2 illustrate the probability curves used. <br /> <br />Once established, however, the Annual Operating Plan does not <br /> <br /> <br />remain rigid. From time to time revisions are made as new <br /> <br /> <br />information becomes available, Flexibility is a keynote of the plan, <br />