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<br />inches for vdater-tolerant plants but is limited to depths between 30 and 40 inches for • <br />non-water-tolerant plants. Runoff is slow or ponded, and the hazard of water erosion is <br />slight. A seasonal high water table is at a depth of 15 to 30 inches in May and June. <br />The water table is at a depth of 30 to 45 inches the remainder of the year. <br />The Becks Variant soil is deep and somewhat poorly drained. It formed in alluvium <br />derived frorn mixed sources. Typically, the upper 6 inches of the surface layer is dark <br />brown gravelly sandy loam. The lower 9 inches are brown very gravelly sandy loam. <br />The underlying material to a depth of 60 inches or more is light yellowish brown <br />extremely gravelly sand. <br />Permeability of the Becks Variant soil is rapid. Available water holding capacity is very <br />low. Effective rooting depth is 60 inches for water-tolerant plants but is limited to depths <br />between 30 and 40 inches for non-water-tolerant plants. Runoff is slow or ponded, and <br />the hazard of water erosion is slight. A seasonal high water table is at a depth of 15 to <br />30 inches iri May and June. The water table is at a depth of 15 to 30 inches the <br />remainder of the year. <br />This unit is used for irrigated hay, livestock grazing and wildlife habitat <br />If this unit is used for hay or pasture, the main limitation is droughtiness when the water <br />table subsides. <br />If this unit is used for homesite development, the main limitations are flooding, a high <br />water table, and seepage. <br />The Matmore Variant soil is in capability subclass IVc, irrigated and nonirrigated. The • <br />Becks Variant soil is in capability subclass IVc, irrigated and Vis, nonirrigated. <br />52A- Menbar Loam, 0 to 3 Percent Slopes. This is a deep, somewhat poorly drained <br />soil is on stream terraces and flood plains. It formed in mixed alluvium. Elevation is <br />6,500 to 7,500 feet. The average annual precipitation is from 18 to 25 inches, the <br />average annual temperature is 37 to 40 degrees F, and the average frost-free period is <br />45 to 75 days. <br />Included in ~~:his unit are very small areas of Aquolls soils and unnamed (49) soils. <br />Typically, the subsurface layer is very dark gray loam 39 inches thick. The upper 6 <br />inches of the underlying material is light brownish gravelly sandy loam. The next 10 <br />inches are light brownish gray loamy sand. The lower part to a depth of 60 inches or <br />more is light yellowish brown extremely gravelly sand. <br />Permeability of the Menbar Loam soil is moderate. Available water holding capacity is <br />high. Effective rooting depth is 20 to 30 inches. Runoff is slow, and the hazard of water <br />erosion is slight. A seasonal high water table is at a depth of 20 to 30 inches in May and <br />June. The n:mainder of the year, the water table is at a depth of 30 to 50 inches. <br />This unit is used for irrigated hay and pasture. <br />This unit is Nell suited to irrigated hay and pasture. It has few limitations. <br />If this unit si used for homesite development, the main limitations are the high water • <br />77 <br />