Laserfiche WebLink
<br />C <br />~:. <br />~ <br /> <br />c <br />c <br /> <br />21 <br /> <br />Under plan 3. the Peaking Power Plan. Rim Basin <br />Reservoir would be created in a natural basin about <br />800 feet above Dominguez Reservoir on the east <br />canyon rim about 9 miles upstream from Dominguez <br />Dam. Rim Basin Dam would he a horses"hoe-shaped <br />structure with an embankment of zoned earthfill. <br />Rim Basin Reservoir would serve 8S farebay and <br />Dominguez Reservoir the' afterbay for -the 500 HW <br />pumpback peak-demand Rim Bas"ln Powerplant to be <br />located in the canyon wall adjacent to the lower <br />impoundment. <br /> <br />With either plan a multilevel outlet works would be <br />built at Dominguez Dam to pennit control of <br />downstream water temperature, thus maintaining <br />native fish habitat. Some riparian lands would be <br />acquired snd developed upstream, -from Dominguez <br />Reservoir to Roubideau Creek and downstream from <br />the dam to the Redlands Power Canal Diversion Dam. <br />In either plan, backwater areas and nesting <br />struc tures would he developed for fish and wild- <br />Life, and wildlife zoning would be established <br />around portions of the reservoir for the protection <br />of certain species such as the hald eagle. <br /> <br />Muncipal and industrial water from _the project <br />(ultimate capacity 74 cfs) would help meet the <br />needs of anticipated population increase in the <br />Grand Valley area and would be provided in either <br />plan. <br /> <br />M&I water supply (acre-feet) <br />Depletion (acre-feet) <br />Hydroelectric power <br />Pumpback peaking (kW) <br />Power on the river (kW) <br />Features, sizes, capacities, cost <br />Dominguez Dam & Res. <br />Capacity (sere-feet) <br />Dam height (feet) <br />Surface area (acres) <br />Rim Basin Dan & Res. <br />Capacity (acre-feet) <br />Darn height (feet) <br />Surface (acres) <br />Dominguez M&I pipeline (mi & cfs) <br />Land purchased for mitigation (acres) <br />Estimated total project cost (January 1981) <br />Benefit-cost ratio <br /> <br />Attractive recreational and fishing opportunlt1.eS <br />would be expected since the maximum reservoir <br />fluctuation would be limited to ahout 20 feet in <br />the Peaking Power Plan and 61 feet in the M&I Plan. <br />Recreational facilities would be provided at <br />several sites on Dominguez Reservoir, while picnic <br />and rafting facilities would be developed on the <br />river 'downstream. A visitor center/museum would he <br />constructed to explain the project and interpret <br />and display cultural resources of the area. <br /> <br />Construction of the reservoir would' necessitate <br />relocation of the Denver and Rio Grande Western <br />Railroad to a new alinement roughly parallel to <br />U.S. Highway 50 between Whitewater and Delta in <br />both plans. With Plan 4, a small portion of U.S. <br />Highway 50 would be relocated around the Kannah <br />Creek arm of the reservoir. <br /> <br />Transmission lines would be constructed from the <br />powerplant(s) to the switchyard. Existing trans- <br />mission systems would he used to transmit the power <br />to Colorado River Storage Project delivery points. <br />The_ Dep,artment of Energy Western Area Power <br />Administration would be responsible for transmis- <br />sion and marketing of power. <br /> <br />The two plans are summarized below. <br /> <br />Peaking <br />Powe r PI an <br />21,200 <br />35,600 <br /> <br />Municipal & <br />Industrial <br />Water Plan <br />221,200 <br />250,900 <br /> <br />500,000 <br />18,000 <br /> <br />36,000 <br /> <br />302,000 <br />190 <br />5,000 <br /> <br />700.400 <br />240 <br />8,400 <br /> <br />9,900 <br />230 <br />145 <br />4.1-74 <br />2,677 <br />$641.111.000 <br />2.01: 1 <br /> <br />4.1-74 <br />9,075 <br />$374,809,000 <br />1. \7, 1 <br />