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Soil survey 12 in are areas of Coutis Included with this soil in mapping sandy loam on foot slopes and in drainageways. They Elevation is 8,500 to 9,200 feet. The percent of the unit. Also included, and aver age a_ ual precipitation is 16 to 20 inches, the make up about 15 `,era ^ ar.:.�31 air temperature is 40 to 44 degrees F, making up about 5 percent, are areas of Libeg extremely and t;,e :.us: f'er season is 55 rot75 sh b own sandy cobbly sandy loam on ridge soil Typically, !}1c surface layer is grayish Permeability of this Bu`fork�s T1,e effective rooting loam 4 inches thick The subsoil extends to a depth of available water capacity 19 inches. It is dark grayish brown sandy loam in the depth is 20 to 40 inches. Surface runoff is medium, and hi h. upper 4 inches and light yellowish brown sandy clay the hazard of erosion is very 9 All of the acreage is used as rangeland. loam in the lower 11 inchesloam. Weathered ante The potential native vegetation is mainly Arizona yellowish brown sandy clay fescue, mountain muhly, pine dropseed, and bedrock is at a depth of 30 inches. The soil is neutral to As the range deteriorates, blue a depth of 2a inches and mildly alkaline and calcareous mountainmahogany. below that depth. in are areas of Coutis grama, slimstem muhly, and rabbitbrush increase. The Included with this soil in mapping use of a planned grazing system, cross fencing, and livestock water developments helps to prevent range of the more sandy loam on toot ! and in drainageways_These deterioration and promotes the production areas make up about 20 percent of the map unit desirable plants. Seeding is somewhat restricted by Permeabii:ty of this Buffork soil is moderate, and the available water capacity is low.The effective rooting slope and cobbles on the surface and is advisable only on the more gentle slopes. Suitable grasses for seeding depth is 20 to 40 inches. Surface runoff is medium, and are intermediate wheatgrass, pubescent wheatgrass, the hazard of erosion is very high• Most areas are used as rangeland. Nordan crested wheatgrass, western wheatgrass, and The potential native vegetation is mainly Arizona Arizona fescue. Tama, Parry, This soil is poorly suited to use as homesites. Limiting fescue, mountain muhly, western wheatgrass, and Parry e and depth to rock_ Excavation and oatgrass. As the range deteriorates, blue g features are slop grazing cross construction of roads, utility lines, 5e t� fringed sagebrush, c tank absorption snakeweed, and rabbitbrush increase. difficult because slopes are steep. p Renovating and using a planned g 9 ments help to fields will not function properly because slopes are steep fencing, and livestock water developments product th o1 20 to 40 inches. -3r,-vent range deterioration and promote the p and bedrock is at a dep This soil is s capability subclass Vile, noni;rigated. e more desirable plants. In renovating, seed should be drilled into a well prepared, firm, weed-free seedbed. foam, 2 to 5 percent slopes.This Suitable qrasses for seeding are intermediaewheatgrass, 8_Coutis sandy is a deep, well drained soil in drainageways and on foot Nheatgrass, pubescent wheatgrass, western to nodding brome, and Arizona use homesites. Features slopes. It formed in mixed alluvium. Elevation is 7,800 0 This soil is well suited to 8,800 feet. The average annual precipitation is 14 to 4 ware of the subsoil. The inches, the average annual air temperature is 40 to 44 that are somewhat limiting are slope, depth to rock, and degrees F, and the frost-free season is 55 to 75 days • moderate shrinking ands 9 loam Typically, the surface layer is d darkrb own sandy loam bedrock can be dug 1 to 3 feet with a light backhoe. 1� inches ;hick. It is underlain by Septic tank absorption fields will function over much of the area if they are not too closely spaced. Depth to 37 inches thick. The substratum is brown gravelly loam to a depth of 60 inches or more. The soil is slightly acid bedrock limit' the amount of effluent that the soil can to a depth of 11 inches and neutral below that depth. adequately filter. in and making up This soil is in capability subclass Vie, nonirrigated. included with this soil in mapping. 40 about 5 percent of the unit, are areas of Venable loam Loam, 20 to 7—Buffork Variant cobbly sandy on low stream terraces and in depressions. percent slopes.This is a moderately deep, well drained Permeability of this Coutis soil is moderately rapid, an soil on side slopes along c' tageThesaverage formed nnual the available water capacity is moderate. The effective residuum from conglom annual air rooting depth is 60 inches or more. Surface runoff is precipitation is 16 to 18 inches, the average medium, and the hazard of erosion is a and and irrigated Most of the acreage is used as rang temperature is 40 to 44 degrees F, and the frost- tee season is 55 to 75 days. dark grayish brown hayland. Mixtures of brome, orchardgrass, pubescent Typically, the surface layer is very 9 y wheat rass, and timothy are commonly grown. cobbly sandy Where this soil is irrigated, the main management loam 2 inches thick. The subsoil extends to g a depth of 14 inches. It is dark grayish brown sandy clay concerns are proper use of water, maintenance of soil fertilit and reduction of soil erosion. Flooding is the loam in the upper 6 inches and grown gravelly sandy common method of irrigation. Corrugation is also a clay loam in the lower 6 inches. The substratum is light Y Way very gravelly loamy coarse sand 7 inches thicli suitable method. Sprinklers and contour ditches are gathered conglomerate is at a depth of 21 inches. The suitable if the irrigated area is large enough. The land _ if is neutral.