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<br />1 <br />~ ~ HG--Shanty loam, warm, 0 to 3 percent slopes. This deep, well <br />' drained soil is on strearm terraces and flood plains of alluvial valley <br />floors. It formed in alluvium. The native vegetation is mainly grasses. <br />' Elevation is 5,000 to 5,300 feet. The average annual precipitation is it to <br />14 inches, the average annual air temperature is 50 to 53 degrees F, and the <br />' average frost-free period is 140 to 165 days. <br />' Typically, the surface layer is grayish brown loam about 27 inches <br />thick. The substratum to a depth of 60 inches or more is stratified sandy <br />clay loam, loam, and silty clay loam. The soil is mildly alkaline to a <br />depth of 48 inches and moderately alkaline belay that depth. <br />Included in this unit is about 10 percent poorly drained fine sandy loam <br />' soil adjacent to stream channels. Also included is about 5 percent <br />well-drained soils that average sandy loam in the upper 40 inches. <br />' Permeability of this Shanty soil is moderate. Available water capacity <br />is high. Effective rooting depth is 6U inches or more. [hmoff is slow, and <br />' the hazard of water erosion is slight. This unit is generally subject to <br />rare, very brief periods of flooding from April to September. However, some <br />parts of the town of Florence included in this unit are not subject to <br />1 flooding because of higher elevation or flood protection measures. The <br />ground water rises to a depth of about 20 to 30 inches in a few areas of <br />' Shanty soil for a brief period in early summer. <br />1~bsC areas of this unit are used for irrigated cropland. A few areas <br />are used for urban land. Hay and pasture are the main irrigated crops. A <br />few areas on the west side of the town of Florence are used for growing <br />vegetables and corn for silage. <br />1 <br />