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<br />. <br /> <br />.-. <br />en <br />CJl <br />.t:-- <br /> <br />. <br /> <br />. <br /> <br />V, Garnet Canal - H Svstem <br /> <br />The Garnet Canal conveys irrigation water from the Garnet Canal <br />Diversion on the Uncompahgre River about 6 miles southeast of Delta, in a <br />northerly direction a distance of 10,1 miles, serving lands on the east side <br />of Uncompahgre Valley. The canal serves 1,590 acres of land. The proposed <br />capacity of the canal would range from 90 to 55 cfs, <br /> <br />A. Geology and Construction Materials <br /> <br />The canal flows generally north through and area with Mancos Shale <br />bedrock, In the first 2 miles of the alignment, the canal flows through as <br />area of flood plain deposits of the Uncompahgre River, In the next few miles <br />of the alignment, the canal alternately crosses areas of tin residual soils <br />'over shale and areas of deeper alluvium deposited by two small washes. This <br />alluvium is up to 13 feet deep and is a lean clay, In the next part of the <br />alignment, the canal flows along the base of a shale hill just above Sweitzer <br />Lake, In this area, the lower canal bank is composed almost entirely of <br />embankment materials. In the remaining part of the alignment, the canal is on <br />a terrace deposit of the Uncompahgre and Gunnison Rivers. The canal section <br />'is in alluvium in this part of the alignment. <br /> <br />Borrow materials for compacted embankment for the Garnet Canal could <br />come from pediment gravel and terrace gravel deposits. These deposits are <br />silty gravels, with terrace gravels containing less fines than the pediment <br />gravels, Up to 20 percent plus 3-inch sizes were estimated to be present in <br />these deposits, <br /> <br />B, Canal Lining <br /> <br />The entire 10,1 mile length of H canal will be put in PVC membrane <br />lining, Canal capacities are as follows: <br /> <br />Canal Capacities <br />by reaches <br /> <br />Capaci ty Length <br />(cfs) (feet) <br />90 35,700 <br />80 1,380 <br />75 1,340 <br />65 4,880 <br />60 4,750 <br />55 5,230 <br /> <br />35 <br />