Laserfiche WebLink
bs EO-CA & T4-C - AAIIOLES CLAY 3-12°~ SLOPES <br />CLASS 4E - IRRIGATED ANA NONIRRIGATED <br />This is a deep, well drained soil located on gently sloping to sloping valleys. <br />It formed in fine textured alluvium from shale. Elevation ranges from 6,000 <br />to 7,000 feet, The average annual precipitation is 14-18". The average <br />annual air temperature is 47-50 degrees P., and the average frost free season <br />is 110-130 days. <br />Typically, the surface layer is brown clay about 6" thick. The subsoil <br />is brown clay about 24" thick and the substratum is brown and reddish yellow <br />clay loam to a depth of 60" or more. <br />Permeability is very slow. Effective rooting depth is 60" or more and available <br />water capacity is high. Surface runoff is medium and the hazard of water <br />erosion is moderate. When the soil is dry, it has deep,-wide cracks to <br />the surface. <br />This soil is mainly used for irrigated crops, pasture, hayland and rangeland. <br />Small grains such as wheat, barley, oats, and corn and alfalfa are the prin- <br />ciple crops grown in irrigated areas. <br />On this particular soil type the primary management concerns are controlling <br />erosion by water, maintaining fertility and organic matter of the surface <br />layer and proper use of irrigation water. Incorporating crop residues into <br />the soil will improve water infiltration, tilth, help control soil erosion <br />and help maintain organic matter content. <br />Native vegetation consists mainly of Indian ricegrass, junegrass, western <br />wheatgrass, big sagebrush, gambel oak, squaw apple, bi.tterbrush, pinyon <br />pine, and Rocky Mountain juniper. <br />Wildlife found on this site include mule deer, cottontail rabbit, coyotes, <br />squirrel, pheasants, and mourning dove. <br />Low strength and high shrink swell are the primary limiting soil features <br />when planning for the construction of homes and other community develop- <br />ments. Roads and building foundations must be constructed to compensate <br />for the low strength and high shrink swell features of the soil. Slow per- <br />meability must be considered in designing leach fields. <br />13F <br />