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• 135 -Morapos loam, 12 to 25 percent slopes <br />This unit is on mountain slopes. Elevation is 6,400 to 7,600 feet. The average annual <br />precipitation is 16 to l8 inches, the average annual air temperature is 40 to 43 degrees F, and the <br />average frost-free period is 65 to 85 days. <br />This unit is 85 percent Morapos and similaz soils. <br />The Morapos soil is well drained and slowest permeability is slow. Available water holding <br />capacity is high and runoff is very high. Depth to restrictive feature is unspecified. It is formed in <br />residuum derived from shale. <br />Typically, the Morapos soil surface layer is loam 10 inches thick. The upper part of the subsoil is <br />clay loam to clay 18 inches thick. The lower part to a depth of 60 inches is clay loam to clay. <br />141 -Nortez, Cool-Morapos Loams - 3-12% slopes <br />i <br />This map unit is on plateaus. Elevation is 6,400 to 7,600 feet. a average annual precipitation <br />is 16 to 18 inches, the average annual air temperature is 40 to 3 degrees F., and the average <br />frost-free period is 65 to 85 days. <br />This unit is 50 percent Nortez soil and 40 percent Morapos soil. Included in this unit are small <br />areas of rock outcrop, Maudlin soils, Duffymont soils, and Iles soils. <br />• The Nortez soils is moderately deep and well drained. It formed in residuum derived from <br />interbedded sandstone and shale. Typically, the upper 5 inches of surface layer is dark grayish <br />brown loam. The lower 5 inches is dark grayish brown clay loam. The upper 16 inches of the <br />subsoil is dark yellowish brown clay loam. The lower 4 inches is yellowish brown channery clay <br />loam. Hard sandstone bedrock is at a depth of 30 inches. Depth to sandstone bedrock ranges <br />from 20 to 40 inches. <br />Permeability of the Nortez soil is slow. Available water holding capacity is low. Effective <br />rooting depth is 20 to 40 inches. Runoff is slow, and the hazard of water erosion is moderate. <br />The hazard of soil blowing is slight. <br />The Morapos soil is very deep and well drained. It formed in residuum derived from shale. <br />Typically the surface layer is grayish brown loam 10 inches thick. The upper 18 inches of the <br />subsoil is brown clay loam. The lower part to a depth of 60 inches or more is light yellowish <br />brown calcareous clay loam. <br />Permeability of the Morapos soil is slow. Available water holding capacity is high. Effective <br />rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is moderate. <br />The hazard of soil blowing is slight. <br />This unit is used for livestock grazing and wildlife habitat. <br />142 -Nortez, Cool-Morapos Loams, 12-25% slopes <br />This map unit is on mountain sides. Elevation is 6,400 to 7,600 feet. The average annual <br />precipitation is 16 to 18 inches, the average annual air temperature is 40 to 43 degrees F., and the <br />average frost-free period is 65 to 85 days. <br />