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I H I I 1 i I I I 11 H Peyton Series The Peyton series consists of well- drained soils that formed in alluvium derived from weathered arko- sic sedimentary rock. These gently sloping to moder- ately steep soils are on upland ridges, alluvial fans, and valley side slopes. Slopes are I to 15 percent. The vegetation is mainly mid and tall grasses, but in places Gambel oak and mountain - mahogany are present. Elevations are 6,500 to 8,000 feet. Annual precipitation is 15 to 18 inches. Mean annual soil temperature is 44 to 46 F., and the frost -free season is 115 to 120 days. In a representative profile the surface layer, about 11 inches thick, is dark grayish -brown sandy loam. The subsoil is grayish- brown, brown, and pale - brown sandy clay loam and sandy loam about 29 inches thick. The underlying material is pale -brown sandy loam extending to a depth of 60 inches or more. Peyton soils have moderate permeability. Avail- able water capacity is high. Plants can penetrate to a depth of 60 inches or more. Most areas of Peyton soils are in native grasses and are used for grazing Iivestock. Some areas are cultivated and are used to grow dryfarmed crops. Wildlife habitat occurs in places, and urban develop- ment is taking place in some areas. Peyton-Pr in - Crowfoot sand loans 5 to 25 er- cent slopes ' 'o complex is an intricate pattern of about 40 percent Peyton sandy loam, about 25 percent Prins gravelly sandy loam, and about 25 percent Crowfoot sandy loam. In most places the Peyton soils and the Crowfoot soils are on side slopes and on the less sloping ridgetops, and Prins soils are on hill crests and the lower end of slopes. Each of the soils of the Peyton and Crowfoot series has a profile similar to that described as representative for its respective series. The Prins soil has a profile similar to that de- scribed as representative for the series, but the surface layer is sandy loam. Included with these soils in mapping are small areas of Jarre, Brussett, and Tomah soils and small areas of rock outcrop. Taken together, these areas make up about 10 percent of each mapped area. Also included is an area between Parker and Franktown that has a thin to moderate cover of pine. Runoff is medium to rapid. The erosion hazard is moderate to high. About two- thirds of the area of these soils has a native grass cover. The remaining third has a brush cover of mainly Gambel oak and some mountain - mahogany. The brush is most common on the Crowfoot soils. These soils are used for grazing livestock, Kutch Series The Kutch series consists of moderately deep, well- drained soils that formed in fine - textured, calcareous material weathered from clay shale. These gently sloping to moderately steep soils are on uplands in the northern part of the Area. Slopes are 4 to 20 percent. The vegetation is mainly short and mid grasses, but some areas support ponderosa pine. Elevations are 5,500 to 6,800 feet. Annual precipitation is 15 to 19 inches. Mean annual soil temperature is 47 to 50 F., and the frost -free season is 120 to 135 days. In a representative profile, the surface layer is grayish -brown clay loam about 3 inches thick. The subsoil, about 16 inches thick, is grayish -brown to light yellowish -brown clay. The underlying material is a light yellowish -brown clay loam. Soft shale is at a depth of about 32 inches. Kutch soils have slow permeability. Available Water capacity is moderate. Plant roots penetrate to the shale. Most areas of this soil are in native grasses and are used for grazing livestock. Some areas are used for woodland products, and a few areas are used for growing wheat. Kutch - Newlin -Ste Teton co lax, 8 to 40 percent slopes (KwF .- -This complex is about 35 percent Kutch soils, about 25 percent Newlin soils, and about 2S percent Stapleton soils. Kutch soils are at the highest elevations and extend part way down the slope. Newlin soils are directly below Kutch soils, and Stapleton soils are at the lowest eleva- tions and on small knobs. Included with these soils in mapping are small areas of cobbly knobs, Fondis soils, Loamy alluvial land, and Larkson fine sandy loam, 3 to 9 percent slopes, on north - facing slopes. Taken together, these make up 15 percent of each mapped area. Runoff is rapid. The erosion hazard is moderate. Gullies are common along drainageways. Most areas of these soils are used for grazing livestock and some areas are used for wildlife habitat. Ponderosa pine and a good understory of Gambel oak and mountain- mahogany are common. Mid and tall grasses are also present. Urban development has taken place in some areas. (Capability unit VIe -5) 1