WSP06091 - Laserfiche WebLink

Home Browse Search

3 " 1070 I. The content of Ruedi Reservoir was 54,116 acre-feet on May 1. Based on the Mal' 1 snow forecast of the Mav-June inflow, the uni- form outflow from Ruedi Reservoir should have averaged about 268 c.f.s. This outflow rate was maintained until early June. At this time a cooling trend caused the inflow to drop off sharply and it appeared that RueM Reservoir would not fill bv ,July 1 so the out- flow was reduced. The inflow began Increasing again bv the middle of ,June and RUfldi Reservoir 'spilled on ,June 24 and filled to a maximum content of 103,070 acre-feet on June 27. The water surface elevation at this time was 7766.70 or 0.70 feet above the spillway crest. The reservoir was then drawn down to a point two feet below the spillway crest and held at this stage during July. The average release for August was 150 c,f.s.rn August 1974, in- flow to Ruedi Reservoir was considerably below 150, c.f.s. resulting in a lowering of the water surface of the reservoir. The release for September was maintained at 100 c.f.s. for the bene- fit of brown trout spawning downstream. The iriflow in September was less than 100 c.f.s. resulting in a further drawdown of the reservoir. On October 1, 1974, the reservoir content was 92,842 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 immediatelv below the iunction of the Fryingpan River and Rocky Fork shall not be reduced below 39 c.f.s. from November through April, and 100 c.f.s. from Mav through October. The releases from Ruedi met these requirements during water year 1974. Table 1 and Exhihit 4 show the 1974 operation of Ruedi Reservoir. Collection System proiect diversions began on April 30 and concluded on August 12 when streamflow hecame insufficient to meet minimum bypass require- ments. During this period, 33,830 acre-feet was imported and stored. A breakdown of the source of this imported water is as follows: Sawver Gulch, 6 percent; Chapman Gulch, 18 percent; South Fork, 29 percent; Lily Pad, 3 percent; and the main stem of the Fryingpan River, 44 percent. . The Fryinr:r>an-Arkansas Commission met with representatives of the Bureau of Reclamation, Bureau' of Soort Fisheries and Wildlife, Forest Service, and Colorado Division of Wildlife on May 10, 1972, and discussed the distribution of minimum fishery bypass flows on the collection system as based on, the Operating Principles. The Bureau of Reclamation broposed that bypass fish flows not be required at Granite, South Cunninpham, Lilv Pad, and Sawver Creek diversions as these creeks had dried up during the previous vear. The Bureau of Sport Fisheries and ''iildli fe stated that it hild written a letter on October 19, 1964, suggesting that the Fryingpan-hrkansas Proiect forego fish bypass flows at the above-mentioned diversion points.