WSP10560 - Laserfiche WebLink

Home Browse Search

] '< ".; , to '~ t"- - JUNIPER UNIT (Analysis based on reconnaissance data) ;f~BR4- Feb 1955 The Juniper Dam site is on the Yampa River about 10 miles upstream from the town of Maybe1l and about 24 miles dO'l'JIlstream from the town of Oraig. A reservoir to impound 1,500,000 acre-feet would back water to within 3 miles of Craig. The dam site is located vlithin the potential Cross Mountain Reservoir and if constructed would limit the height of the Cross Mountain Dam to 145 feet with a reservoir of about 600,000 acre-feet. As a result the construction of Juniper would reduce the amount of storage now contemplated on the Yampa River by about 2.5 million acre-feet. The combined Juniper and small Cross Mountain developments would be less attractive for po'wer production than the large single Cross Mountain unit. Also, their combined capacities, being only slightly grel3.ter than the average annual flow of the Yampa River, would contribute little to the regulation at Ule Ferry. The Juniper Dam could be utilized as a diversion and storage dam to serve lands in the Deadman Panch project southwest of th.e dam site. An irrigation canal would divert from the dam at elevation 6,100. The canal would run generally southwest to irrigate approximately 29,000 acres of new land in Colorado and 61,000 acres of new land in utah between the Yampa and White Rivers. A reservoir of 1,500,000 acre-feet would permit the generation of about 125,000,000 kilowatt-hours of energy annually ,'lith existing streamflows. The relatively uniform power releases from the powerplant could probably then be utilized for energy generation at two or three potential pO'lver drops downstream above the Echo Park Reservoir. Pov.-er from the dam could probably be absorbed by local markets "lithin a reasonable period of time. Reconnaissance data on the Juniper unit are listed below. (Costs are based on October 1954 price levels.) Cost of dam, access road and construction camp Cost of powerplant Cost of transmission system Annual operation and maintenance and replacement cost Installed capacity of powerplant Maximum power head Type of dam Crest length Initial firln annual energy output Estimated' future annual ,yater use upstream Estimated annual diversion to Deadman Bench Reservoir capacity Maxinrom water surface area Average annual evaporation (1931..1947) $4,338,000 1,550,000 25,000 kw. 205 ft. ,,- 125,000,000 kwh. 124,000 a.f. 270,000 a.f. 1,500,000 a.f. 20,000 acres 38,000 a.f.