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1078 . the actual inflow computed frolllmeasured outflow and change in storage was used. Upstream transmountain diversions were added back to the reser- voir inflow to give undepleted inflow to Ruedi Reservoir. A probability curve for Ruedi undepleted inflow was computed by the modified California method and is shown graphically on exhibit 1. Annual inflow of a magnitude equaled ,or exceeded .50 percent of the time was considered the most probable inflow, that with a 90 percent chance of being equaled or exceeded was considered to be the reasonable minimum, and that with only a 10 percent chance of being equaled or ex- ceeded was considered the reasonable maximum. .The October through March inflow was the average 1960 through 1973 inflow for this period. After October through March inflow was subtracted, the remainder was distributed between the months of April through September according to the distribu- tion of the mean undepleted inflow. From the undepleted inflow, the corresponding transmountain diversions were subtracted. The transmountain diversions were the most probable, the reasonable minimum, and the reason- able maximum values for Busk-Ivanhoe and Charles H. Boustead Tunnel diver- sions as determined by probability' studies, exhibit 2. Storable inflow was considered to be the ~esulting depleted inflow less bypass for the protection of recreational ~alues, including fishing on the Fryingpan River below Ruedi Reservoir. . Minimum Reservoir Release . The bypass, not to exceed the stream inflow, is 39 c.f.s. for the months of November through April, and 110 c.f.s. for May through October. At the request of State and Federal fish and wildlife rep- resentatives, the bypass for the period September 1 through November 15 will be 100 c.f.s. to facilitate downstream fishery and the brown trout hatch. At the request of Colorado River interests, August bypass will be at a minimum of 150,c.f.s. ' Reservoir Operation Operation of Ruedi Reservoir through November 15 is in compliance with a request by fish and wildlife interests. Releases from the reservoir are to be held to 100 c.f.s. for the period October 1 through November 15. Then, in order to provide maximum flood protection below the dam, the reservoir will be drawn down by March 31 to a point theoretically 54,800 acre-feet, where refilling would be assured under reasonable minimum inflow conditions computed from the probability study. An estimate of probable inflow would be made early in March when actual conditions become known from the March 1 snow forecast and drawdown would be adjusted accordingly. . West'Slope recreation interests requested that the reservoir water level not be drawn down below elevation 7706.0 (53,122 acre-feet) which is two feet above the bottom of the Forest Service boat ramp. Under reasonable maximum and most probable inflow conditions, the reservoir would theoret- ically be drawn down to this capacity. 11 ,