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co 00 Co The most significant differences recognized in differentiating the evaluation areas are water supply, climate, and soils. The areas are described as follows: . C_ Evaluation Area A - This area includes project lands in the upper ~i th Fork Basin, generally east of the town of Crawford. Irri gation water is supplied by the Needle Rock, Pilo t Rock and Lone Rock di tches north of the ~ith Fork River, and the Saddle Mountain and Daisy ditches south of the river. Water shortages in the past have ranged from 30 percent to 45 percent of seasonal requirements. These shortag;: s are ooncentrated during the months of July, August and September. These lands lie above the proposed Crawford Reservoir and will continue to receive water by direct diversion from natural flow of the ~ith Fork River. Additional irrigation water will be supplied by the project in exchange wi th lands receiving supplemental water from the Crawford Reservoir. This area includes some lands with the highest elevation and the shortest growing season in the project. Soils are deepwith medium-textured surfaces and moderately-fine to fine-textured subsoils. They have a medium water intake rate and high water-holding capaci ty. Dominant slopes range from four to six percent. Crops sui ted to the cl imate and slopes of these lands are alfalfa, pasture and small grain. Some silage corn is also grown in the area. Evaluation Area B - This area includes the most productive of those lands located on the eastern part of Grandview Mesa and on the lower Cottonwood Creek drainage area. Irrigation water is furnished by the Clipper and Grandview ditches from direct diversions of the unregulated flows of the river. Average water shortages in the past have amounted to approximately 25 percent of requirements. Part of the area has a low priori ty water right and has had water supply shortages of up to 50 percent of requirements. Direct flow water will be supplemented by storage water from the Crawford Reservo ir delivered through the Aspen Canal. This area includes some lands at the lowest elevations wi th the longest growing season in the project. S:> ils are generally deep to moderately deep, have a medium-textured surface, a moderately-fine to fine-textured subsoil, a medium water intake rate, and a high water- holding capacity. Dominant slopes range from three tp six, percent. Evaluation area B has the most favorable climate in the project area for the production of feed crops. The largest acreage of corn silage will be grown in evaluation area B. - 5 -