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1968, discharge at the gaging station on the Fryingpan River near Ruedi, Colorado, is corrected for Rocky Fork flow and used as Fryingpan River flow at Ruedi, Colorado. Rocky Fork flow was estimated from spot measure- ments. After May 1968, when storage began in Ruedi Reservoir, the actual inflow computed from measured outflow and change in storage was used. Up- stream transmountain diversions were added back to the reservoir inflow to give undepleted inflow to Ruedi Reservoir. A probability curve for Ruedi undep1eted 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 con- sidered 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 exceeded was considered the reasonable maximum. The October through March inflow was the average 1960 through 1974 inflow for this period. After October through March inflow was subtracted, the remainder was distributed among the months of April through September according to the distribution of the mean undepleted inflow. From the undepleted inflow, the corresponding trans- mountain diversions were subtracted. The transmountain diversions were the most probable, the reasonable minimum, and the reasonable maximum values for Busk-Ivanhoe and Charles H. Boustead Tunnel diversions as determined by probability studies, Exhibit 2. Storable inflow was con- sidered to be the resulting depleted inflow less bypass for the protection of recreational values, including fishing on the Fryingpan River below Ruedi Reservoir. 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 representatives, 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. ' 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 31jto a point, theoretically 5~, 700 acre-feet, where refilling would ~e assured under reasonable minimum inflow conditions computed from ithe 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. 11~8 Minimum Reservoir Release Reservoir Operation . . . 12