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1035 . Lake. Two of the studies simulate operations with extremely high or extremely low water supply conditions. Reservoir inflow in 1974 has a l-in-lO chance of being less than the reasonable minimum, and a l-in-lO chance of being greater than reasonable maximum. There- fore, actual operations in 1974 have an 8-in-lO chance of falling between the limits of the extreme studies. The third study simulates operations with most probable water supply conditions. Water for the 30,000 acre-foot permanent pool of Pueblo Reservoir is scheduled to be transferred from Turquoise Lake in the winter of 1973-74. If severe icing conditions exist in the upper Arkansas Valley, at least part of the water will be released from Twin Lakes and paid back to the Twin Lakes Reservoir and Canal Company at the time of their first irrigation water run in the spring. The monthly operation study for Turquoise Lake wa~ made assuming a mild and a severe winter. The study for the mild winter assumes all releases to Pueblo Reservoir's permanent pool are made from Turquoise Lake. The study for a severe winter, assumes;all releases during the winter months to be made from Twin Lakes and repayment made during the early spring from Turquoise Lake. In preparing the operation studies, it was intended to provide the necessary flexibility to change from one set of conditions to another. The ever-changing situation: regarding inflows, downstream requirements, etc., will require many adjustments. Operation schedules will be adjusted as require~. Forecasts of the April through July reservoir inflow will be started on March l, 1974, and continue on the first of each succeeding month thrOUgh May l. . Ruedi Reservoir Operation of Ruedi Reservoir through 'November l5 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 l5. Then, in order!to provide maximum flood protection below the dam, the reservoir will be drawn down by March 3l to a point where refilling would be assured under reasonable minimum inflow conditions, theoretically to 54,800 acre-feet. In actual practice, an estimate of probable inflow would be made early in March based on March 1 snow forecast, and ctrawdown would be adjusted ~ccordinglY. West slope recreation interests requ~sted that the reservoir water level not be drawn down below elevation 7706.0 (53,l22 acre-feet) which is two feet above the base of the Forest Service boat ramp. Under reasonable maximum and most probable inflow conditions, the reservoir would theoretically be drawn down to this capacity. . 16