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Show 136 PROBLEMS OF IMPERIAL VALLEY AND VICINITY. DUCHESNE RIVER. [Including Rock Creek and Strawberry Rivftr.] An analysis of* water supply for these streams was macle in the recent Reclamation Service report noted under "Authorities" from which most of the following is summarized: CASTLE PEAK PROJECT. Net area, 48,000 acres. Irrigation plan-Main canal.-The proposed diversion on the Duchesne is located 5 miles below the mouth of the Strawberry River, or about 9 miles below the Starvation reservoir. The first division of the main canal extends from the headworks to the proposed tunnel through the My ton Bench, a total length of 12 miles, and follows the contour of the hills about on the toe of slope for the greater part of the distance. The Myton Tunnel, 9,200 feet long, will deliver water in Pleasant Valley at an elevation of 5,345 feet. The second division will extend across Pleasant Valley and the South Myton Bench, a distance of 8 miles, to Tunnel No. 2,. the greater part of this division being in gently sloping ground. The third division is 5 miles in length beginning with Tunnel No. 2, 1,600 feet long, and crosses the baa lands, having many structures and being in rock cut for practically its entire length. The fourth and last division of tlie main canal ^crosses the Pariette Bench lands in comparatively smooth country'and has a total length of 9 miles. Storage.-Ninety-five thousand acre-leet are to be provided at Starvation reservoir 4 miles above the town of Duchesne. Supply to the reservoir to be supplemented by a 400 second-foot canal diverting from Duchesne River above Rock Creek junction. Water supply.--After allowing for prior rights and assuming that all old lands below Myton will be watered from return flow, it requires all of Strawberry River plus the Duchesne River above Rock Creek to supply the demands of the project. Assumed duty. Acre-feet per acre. April...................................................................... 0.15 May.........................................................................75 June----...................................................................97 July....................................................................... .98 August..................,...................................................75 September.....¦....................,.........................................15 .............................................................3.75 Total demand.-One hundred and eighty thousand acre-feet. Conclusion.-Project not feasible now, because of high cost of reservoir. Placed in class C. ROCK CREEK. The irrigable area is 23,800 acres from this creek, of which 4,100 acres are now irrigated. |
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Original book: [State of Arizona, complainant v. State of California, Palo Verde Irrigation District, Coachella Valley County Water District, Metropolitan Water District of Southern California, City of Los Angeles, California, City of San Diego, California, and County of San Diego, California, defendants, United States of America, State of Nevada, State of New Mexico, State of Utah, interveners] : |