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.~, .. I": C: ;:;ii(..V . :IN)A]~T PROJECT PROJECT PLfu"l, FEATURES, AND COSTS TIle lower 12 miles of the conduit would involve earth excavation through nonirrigated pasture land where the vegete:tive cover consists of scrub oak and brush. Clearing requirements and canal lining requirements would both be light. Landis Canal The I,andis Canal consisting almost entirely of open earth section ;Tou1d head at the outlet of Missouri Hei.ghts Reservoir and would extend northwest approximately 22.8 miles to its terminus at the head of the Spring Valley lateral system. The canal capacity would be 220 second-feet for the first 7.5 miles above the Cattle Creek outlet, 140 second-feet for the next 13.1 miles above the Landis Creek outlet, and 50 second-feet for the remaining 2.2 miles which includes an 0.8-mile-long siphon across Landis Creek. . r~xcavation would be mostly in reddish sand clay loam soils with some lava cobbles, boulders, and broken sandstone. Gravelly soils would be encountered near stream channels but there appears to be sufficient fine material along the canal route to assure satisfactory construction condi- tions. Cross slopes average about 20 percent. Turnouts, wasteways, drop structures, measuring devices, bridges, and c~lverts would be provided as needed along the canal route. Spring Valley lateral The Spring Valley lateral would head at the outlet of the I,endis siphon of the Landis Canal and extend southwest about 2.8 miles, convey- ing irrigation water to lands on the Gpring Valley Bench. The lateral .,ould consist of open canal section and would have a capacity of 50 second- feet. No special construction problems are anticipated. Carbondale Canal The Carbondale Canal would head on a natural channel approximately one mile below the outlet of the Missouri Heig)1ts Reservoir. It would meander southwest a total distance of 12.6 miles, terminating at Thomas Creek about 5 miles southeast of Carbondale. The canal vould convey project water to lands in the Carbondale area. About midway along its course the canal would cross the Roaring Fork River by meallS of a siphon 6,800 feet long. The Sopris Canal would branch from the Carbondale Canal at the outlet of the siphon. . The cffilal would have a capacity of 55 second-feet from its head to the outlet of the Roaring Forl{ siphon and 30 second.-feet beyond that point. It would consist of about 10.1; mIles of open earth section and 2.2 miles of concrete section. Clearing would be liGht and most of the 15