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<br />COLO~ADO RIVER STORAGE PROJECT, <br /> <br />5, <br /> <br />Tlleffiue Mesa Dam, located 30 miles downstream from Gunnison, <br />would be the largest of the series in the Curecanti unit. It would he <br />an earth-fill structure about 3,50 feet high abo<'e its foundation 'and <br />about 820 feet long at its crest. The reservoir would have a capacity <br />of ahout 940,000 acre-feet at a high-wltt,er eh',vation of 7,520 fo,et, <br />About 200,000 acre-feet of the reservoir capacity would be inactive: <br />The active capacity ~ould provide the principal seasonal river rcgu~ <br />lation for the unit :powerplants. Recreational facilities would be <br />provided at the resel'voir.' <br />Investigation and iplanning of the Curecanti unit are cont,inuing.in <br />more detailed scope as required by the authorizing act. <br /> <br />Transmission division <br /> <br />The authorizing act of April 11, 1956, provides that project power- <br />pl"ntB "nd tr"nsmission fMilities shall be operated iu conjunctiou with: <br />other Federal powerplants, present and potential, so as to produce the <br />gre"test practicable' amount of power and energy that can be sold at, <br />firm power and energy rates, To carry out the provisions of the law, <br />a high,voltage trausmission and grid will be constructed to inter- <br />connect the plants Of the authorized units of the storage project and <br />to effect interconnection with other existing Federal powerplants and <br />utility systems in the area, ' <br />The transmission; division includes the high-voltage lines from stor-, <br />age unit switchyard;s to substations at major load centers and points Of <br />interconnection and the substations at those points. Facilities of the <br />trausmission division will be extended as necessray to provide intercon" <br />nections with futuie units of the storage project and with Other }<'ed- <br />eral plants and to provide for interconnection of future participating <br />project transmission lines with the high-voltage grid. The extent and <br />location of the high-voltage transmission grid will depend on the <br />market area requirements for project power, the desires of power users, <br />to purchase,projeet power, points of interconneCtion with other sys- <br />tems, and the final allotments of power to various users. , <br /> <br />PARTICIPA'l'ING PROJECTS <br /> <br />Participating projects are those which will cons1lme water of the <br />uPl?er Colorado River system for irrigation and other purposes and <br />which will require; assistance from power revenues of the storage proj- <br />ect in the repaym~nt of irrigation costs. An initial group of 11 partiCl- <br />pating projects "flas ltl~thorized by tI,e act of ,April ,11, 1~56. These <br />mclude the Paoma, Smlth Fork, Flomla, and Silt proJects m Colorado i <br />the Pine River extension in Colorado and New Mexico; the Hammona <br />project in New Mexico; the centra.! Utah project (initial phase) and <br />Emery County project in Utah; and the Seedskadee, La Barge, and, <br />Lyman projects p:> Wyoming. The pr?jects .combined will provide <br />water for 0. total pf about 365,100 acres, mcludmg about 132,800 acres <br />of full service land and about 232,300 acres of supplemental service' <br />~~ ; , <br />Brief descriptIons of the 11 initial participating projects appeal" <br />below. Data Oil irrigable area, reservoir' storage capacity, and water' <br />supply are summarized in the table on page 8. : <br />, <br /> <br />L <br />