WSP05214 - Laserfiche WebLink

Home Browse Search

3. Reservoir Operation I I I I I I I I I '. I I I I I I I I I 1993 The planned release from Ruedi Reservoi r : for October through Apri 1 is 80 ft3/s which would draw the reservoir down to an elevation of 7733.3 feet by March 31, 1990. However, :based upon the type of runoff season indicated by monthly snowpack data, the outflow from the reservoir and the target elevation will be adjusted. To provide maximum flood protect i on be 1 ow the dam, the reservoi r wi 11 be drawn down by March 31,1990, to a point where refilling would be assured during the spring runoff. Estimates of ;probable inflow will be made following the February 1, March 1, April :1, and May 1 snow forecasts. Following this, the drawdown will be adjus~ed accordingly. West Slope recreation interests requested that the reservoir water level not be drawn down below elevation 7706.0 (53,000 acre-feet), which is 2.0 feet above the bottom of the ~orest Service boat ramp. The reservoir would fill by the first of JulY to provide optimum recreational benefits during the sumner months. This request wi 11 be honored until long term contracts can be developed for s~le of storage water. After July 1, operating plans call for l]1aintaining the reservoir at elevation 7764.0 (2.0 feet below the spillway crest) until August 1. Then, on ly inflow and short term contracted de 1 i veri es will be passed during the month of August. The Colorado Division of Wildlife has requested that the outflow be maintained, at about 100 ft3/s during September to optimize the downstream fishery. These flows will be maintained under normal conditions. If conditions warrant, the outflow during these months may be adjusted to conserve water. , If water is sold to entities downstream, tne outflow from the reservoir will be adjusted to the situation at the time of delivery and will be included in the overall operation. : Table 13 and exhibit 21 show the anticipated operation of Ruedi Reservoir during water year 1990. C. West Slope Collection System " In 1990, there will be 16 diversion points on the west slope collection system in operation. This year there is capability to exchange a maximum of 3,000 acre-feet of' water with the Twin Lakes Reservoi rand Cana 1 Company. The water is to be de 1 i vered to the company at Twin Lakes in exchange for the company making equivalent releases from the headwaters of the Roaring Fork River which would otherwise be diverted through such Twin j Lakes Reservoir and Canal Company collection and diversion system. ! The Hunter system portion of the west slope :collection system wi 11 be in operation to divert approximately 8,000 acr~-feet of water. Of this, up 22