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<br />Ii.' <br />.... <br />"l:l" <br /> <br />-. <br /> <br />'-. <br />~- <br /> <br />BUREAU OF RECLAMATION REPORT <br /> <br />project diversion canal to the Green River. A power plant would not be <br />installed, however, until markets for nonfirm energy develop in the <br />Upper Green River Basin or an outlet for the energy is provided through <br />interconnections with power systems in other areas. Fish and wildlife <br />values would suffer minor damage as a result of project development. <br />Recreation would not be materially affected. The project would have no <br />effect on navigation, industrial water supplies, flood and silt control, <br />and stream pollution abatement. No Indian lands are located in the <br />project area. <br /> <br />Project Works <br /> <br />Principal construction features would be the Seedskadee Diversion <br />Dam on Green River, a system of canals to convey water from the diver- <br />sion dam to the project lands, two hydraulic turbine-powered pumps, and <br />a lateral and drainage system. The project canal system would consist <br />of the Seedskadee Diversion Canal, Green River Siphon, Big Sandy Canal, <br />East Side Canal, West Side Canal system, Lower West Side Gravity Canal, <br />and the Lower West Side Pump Canal. <br /> <br />Seedskadee Diversion Dam. The Seedskadee Diversion Dam would con- <br />sist of a low ogee overflow section 400 feet long, canal headworks, a <br />sluiceway, and a dike 1,000 feet long. The overflow section is designed <br />to pasa a 26,000 second-foot flood under a head of 6.2 feet. An upstream <br />apron of concrete 39 feet long with a cut-off wall would be joined to the <br />dam, and a downstream apron would extend 40 feet from the dam to a lower <br />cut-off wall. Riprap would be placed to stabilize the river channel <br />above and below the aprons. A sluiceway would be provided in front of <br />the canal headworks on the west bank of the river channel. The canal <br />headworks would have a designed capacity of 1,350 second-feet. Fish <br />screens would be provided near the headworks as required by Wyoming <br />State law. <br /> <br />Canal system. The Seedskadee Diversion Canal would convey water <br />from the Green River to the project area. It would be 19 miles in length <br />and would have an initial capacity of 1,350 second-feet. The canal would <br />be predominantly in earth section and would roughly parallel the west bank <br />of the Green River. In its initial 1,000-foot section the canal would be <br />bordered on the north by the diversion dike. The diversion canal would <br />terminate at a bifurcation structure at the headings of the West Side <br />Canal and Green River Siphon. <br /> <br />The Green River Siphon would convey water across the Green River to <br />lands east of the river. The siphon would be 5,700 feet long. It would <br />have a maximum head of 126 feet and a capacity of 515 second-feet. A <br />turnout on the siphon barrel 15 feet below the outlet would release 165 <br />second-feet of water to the East Side Canal. The remaining 350 second- <br />feet conveyed by the siphon would continue to the outlet and thence into <br />the Big Sandy Canal. The Big Sandy Canal would serve lands on both sides <br /> <br />" <br /> <br />3 <br />