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<br />002029 <br /> <br />TudorlState Alternative 2 <br /> <br />Alternative 2 is basically the system studied by the U.S. Bureau of Recla- <br />mation in the early 1960's and appears in the FEIS/SR as Alternative D. <br />(See Map 3). It would include two large mainstem storage reservoirs, Grey <br />Mountain and Idylwilde, each with 200,000 acre-feet of total storage. It <br />would also include Kinikinik Afterbay Dam, Rustic Diversion Dam, and Cache- <br />la Poudre Forebay Dam. Mainstem flow would be stored at Idylwilde Reser- <br />voir for release through a 24.0-megawatt Idylwilde Dam Power Plant which <br />would provide 22.0 megawatts of dependable peaking capacity. These power <br />releases would be stored at Kinikinik Afterbay Dam for continual release to <br />the River. This flow, with the exception of downstream bypass releases, <br />would be diverted into a tunnel and conduit at Rustic Diversion Dam. The <br />conduit would carry the flow to Cache la Poudre Forebay Reservoir where it <br />would be stored temporarily for release to the Grey Mountain Power Plant, <br />an 81.S-megawatt peaking power plant. Grey Mountain Reservoir would serve <br />as an afterbay for this power plant and would store the flows for eventual <br />release to serve conservation uses in the lower basin. A O.S-megawatt <br />Kinikinik Dam Power Plant would produce dependable base load capacity using <br />the downstream bypass releases and a 12.0-megawatt Grey Mountain Dam Power <br />Plant would provide intermittent dependable capacity using the releases to <br />serve conservation needs. This alternative would provide a total of 103.5 <br />megawatts of dependable peaking capacity and 14.5 megawatts of non-peaking <br />capacity. The total energy production would average 229,000,000 kilowatt- <br />hours per year. Grey Mountain Reservoir would supply 64,800 acre-feet of <br />water per year for municipal and industrial uses and 216,600 acre-feet of <br />water per year for agricultural uses. It would produce a yield of 14,300 <br />acre-feet per year of new water. <br /> <br />Tudor/State Alternative 7 <br /> <br />Preliminary Alternative 7 would include two large storage reservoirs, New <br />Seaman with 200,000 acre-feet of total storage and Elkhorn with 196,000 <br />acre-feet of total storage (See Map 3). Mainstem and South Fork flows <br />would be stored at Elkhorn Reservoir and released directly through a power <br />tunnel to New Seaman Power Plant, a 79.0-megawatt peaking power plant. <br />Downstream bypass flows would be released to the River from Elkhorn Dam <br />Power Plant and would provide 1.3 megwatts of dependable base load capa- <br />city. New Seaman Reservoir would serve as an afterbay for the peaking <br />power plant and would store the flows for eventual release to serve con- <br />servation uses in the lower basin. These flows would pass through a 8.0- <br />megawatt flew Seaman Dam Power Plant to provide intermittent dependable <br />capacity. This alternative would provide a total of 79.0 megawatts of <br />dependable peaking capacity and 9.3 megawatts of non-peaking capacity. The <br />total energy production would average 205,100,000 kilowatt-hours per year. <br />New Seaman Reservoir would supply 64,800 acre-feet of water per year for <br />municipal and industrial uses and 215,400 acre-feet of water per year for <br />agricultural uses. It would produce a yield of 13,100 acre-feet per year <br />of new wa ter. <br /> <br />3 <br />