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<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />_'l< ,~I';, ('\ <br />t::&:t.. ;~, <br /> <br />BASALT PHOJECT <br /> <br />PHOJECT PLAN, FEATURES, AND COSTS <br /> <br />The potential Carbondale Canal would head on a natural channel about <br />one mile below the outlet of l.fissouri Heights Reservoir and would extend <br />southwest 12.6 miles, crossing Hoaring Fork River by siphon and providing <br />water to lands in the Carbondale area. The canal would also intercept <br />surplus flows of Prince Creek. The Sopris Canal ,muld branch from the <br />Carbondale Canal at the outlet of thE;' Roaring Fork siphon and ;rould con- <br />vey water 8.3 miles south;rest to Hest Sopris Creek to provide additional <br />irrigation water to lands in the Sopris area. <br /> <br />Some lands located above project works would receive project water <br />by exchange. <br /> <br />Existing irrigation systems are generally adequate to convey supple- <br />mental project ;rater to lands presently irrigated, but these systems would <br />be enlarged as necessary. Some new laterals would be constructed to con- <br />vey water to the additional lands that would be irrigated. Land drains <br />would also be provided as needed. <br /> <br />It is anticipated that a water conservancy district would be organ- <br />ized under Colorado law as a contracting and administrative agency for the <br />Basalt project. <br /> <br />Construction Con~lderations <br /> <br />A period of' about four years is estimated to be required for the con- <br />struction of the features of the Basalt project. This period is exclusive <br />of the time required for the construction of the Ruedi Dam and Reservoir. <br />The two construction programs could be carried out simultaneously, however. <br />Reasonably good access is afforded to all features of the project Over <br />existing transportation routes. <br /> <br />Pro,iect Features <br /> <br /> <br />Missouri Heights Dam and Reservoir enlargement <br /> <br />The Missouri Heights Dam and Reservoir enlargement would consist of <br />raising the existing 23-foot-high dam approximately 41f feet to a total of <br />67 feet above streambed and increasing its crest length from about 1,600 <br />feet to about 3,400 feet. The reservoir capacity would be increased from <br />the present 2,800 acre-feet to 21,500 acre-feet, an increase of 18,700 <br />acre-feet. <br /> <br />The dam would be a rolled earth fill structt~e with a layer of riprap <br />on the upstream face and a section of gravel and rockfill on the downstream <br />face. The outlet works would consist of a reinforced concrete conduit <br />laid on undisturbed earth under the dall' embankment. To prevent seepage <br /> <br />13 <br />