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1113 . surface elevation was only 2.63 feet above the projected minimum eleva- tion; therefore, the outflow was reduced to 76 c.f.s. on April 5 and further reduced to 52 c.f.s. on April 14 to prevent a rapid drawdown until spring runoff began. During late April it appeared that the spring runoff was beginning and the reservoir water surface was rising, so the outflow was increased to about 125 c.f.s. on April 25. A period of cold weather occurred early in May and the inflow fell considerably. As a result, the water surface dropped until a minimum water surface elevation of 7706.42 (content 53,402 acre-feet) was reached on May 11. Based on the May 1 forecast of the May-June inflow, the uniform outflow from Ruedi Reservoir should have been 305 c.f.s. But, due to the low inflow and water surface elevation, the outflow was not increased until the middle of May. The spring runoff did not develop as was expected from earlier forecasts due to repeated cool temperatures; therefore, Ruedi Reservoir was not full by July 1 as planned. On July 3 the outflow was reduced to 146 c.f.s. in order to fill the reservoir for recreation purposes. Ruedi Reservoir spilled on July 17. On July 22 the maximum storage of 103,370 acre-feet was reached. The water surface elevation at this time was 7767.00 or one foot above the spillway crest. Drawdown of the reservoir was then begun to bring the water surface elevation two feet below the spillway crest. A request made by Colorado River interests to release a minimum of 150 c.f.s. . during August resulted in a further drawdown of the reservoir. The release for September was maintained at about 110 c.f.s. to improve brown trout spawning downstream. Ruedi Reservoir content on October 1, 1975, was 95,238 acre-feet. The Operating Principles state that the releases from Ruedi Reservoir, not to exceed the stream inflow, shall be made so that the streamflow immediately below the junction of the Fryingpan River and Rocky Fork shall not be reduced below 39 c.f.s. from November through April, and 110 c.f.s. from May through October. The releases from Ruedi met these requirements during water year 1975. Table 1 and Exhibit 4 show the 1975 operation of Ruedi Reservoir. South and North Side Collection Systems The Fryingpan-Arkansas Project imports began on May 15 and ended on August 17. The total diversion through the Charles H. Boustead Tunnel in 1975 was 37,060 acre-feet which included 35,914 acre-feet of direct diversions and 1,146 acre-feet of seepage. A breakdown of the source of diversions is as follows: Sawyer Gulch, 6 percent; Chapman Gulch, 18 percent; South Fork, 29 percent; Fryingpan River below Marten Creek, 44 percent; and Lily Pad, 3 percent. . 3