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10 SOIL SURVEY The Uatic Torriorthents are steep, shallow, well drained sods forming in calcazeous loamy alluvium derived from siltstone and calcareous sandstone. Badland consists of steep and very steep barren land dissected by many in- termittent drainageways that have entrenched into the soft shale and s>Ztstone. The minor soils in this unit aze small isolated azeas of Keota and Mitchell soils, Argiustolls, and Rock outrrop. This unit is used entirely for grazing and wildlife habitat. The potential for other uses is poor. The unit is barren or neazly barren and is too steep or inaccessible for livestock. In ravines and steep eanyonlike areas, Rocky Mountain juniper is common. Wildlife, such as deer, antelope and bobcat, aze common in this isolated rugged area. Most of the unit is too steep or too rocky for cultiva- tion. The soils are droughty and susceptible to soil blow- ing and water erosion. Water for livestock is also difficult to locate in this area. Some areas have potential for recreational activities, such as hiking and nature study. 14. Mitchell-Keota Deep and moderately deep, nearly level to moderately sloping, well dmined soils formed in loamy materials derived from siltstone; on uplands These so0s are located on the neazly level to moderate- ly sloping upland flats, fans, ridges and hills in the northwestern part of the county. This unit occupies about 75 percent of the county, a total of approximately 86,080 acres. About 60 percent of the unit is Mitchell Boils, 25 percent Keota soils, and the remaining 15 percent soils of minor extent. Mitchell so~7s are deep, well drained loamy soils on Elate and fans. Keota soils aze moderately deep, well drained loamy sods, on ridges, underlain by bedrock at depths of 20 to 40 inches. All formed in materials derived from silt- stone and aze usually calcareous throughout. The minor soils aze the well drained Epping, Arvada and Norka so0s. The Epping soils aze shallow, aze under- lain by bedrock at 10 to 20 inches, and are on knobs and ridges. The Arvada soils are deep, alkali affected sods oc- curring in depressions. The Norka soils are deep, nearly level soils on flats and fans. This unit is used almost entirely for grazing. Some scat- tered small areas of the deeper soils on smoother slopes are used for nonirrigated cropland. Wheat and millet are the principal crops. The potential for nonirrigated cropland is fair because of the limited precipitation and high erosion hazard. The potential for irrigated cropland is poor mainly because of the lack of underground water. This unit is beat suited to grazing. The potential for urban uses is good for Mitchell soils and fair for Keota soils. Depth to rock is the primary lunitation. The potential for development of rangeland and openland wildlife habitat is fair. 15. Stoneham-CuehmanShingle Deep to shallow, gently sloping to strongly sloping, well drained soils formed in calcareous loamy materials ute- derlain by shale; ova uplands These gently sloping to strongly sloping soils are located in the western part of the county. This unit is made up of ridges and hills and is divided by intermittent drainageways. This unit occupies about 9.0 percent of the county, a total of approximately 104,870 acres. About 50 percent is Stoneham so~7s, 25 percent Cushman soils, 15 percent Shingle soils, and the remaining 10 percent sois of minor extent. The major soils in this unit are the loamy, well drained Stoneham, Cushman and Shingle soils. Stoneham soils aze deep sods forming in calcareous loamy alluvial and eolian materials on ridges and hills. Cushman soils are moderately deep sods underlain by shale at depths of 20 to 40 inches. They are on ridge crests. Skingle soils are shallow soils underlain by shale at depths of less than 20 inches. They are on strongly sloping ridge crests and knobs. The minor soils are the deep, well drained Wages and Olney so0s, and the moderately deep Renohill soils on ridges and hills. Also included are the deep, well drained Haverson sods on narrow flood plains of intermittent drainageways. Moat of this unit is used for grazing. Some scattered areas are used for nonh~rigated cropland, with wheat and sorghum ae the main crops Soils of this unit are subject to so>1 blowing and water erosion. Concerns of manage- ment are conserving moisture and protecting soil from soil blowing and water erosion. The potential for irrigation is limited by the lack of un- derground water. This unit has a fair potential for urban uses. It is limited mainly by depth to bedrock. The poten- tial for deve]opment of openland and rangeland w>7dlife is fair. Deep Soils Forming in Unconsolidated Gravelly Materials on Upland Ridges and Fans 16. Dix-Eckley-Chappell Deep, gently sloping to moderately steep, well dmined and somewhat excessively dmined soils forming in gravelly alluvium; on upland ridges and alluvial fans These soils aze on the gently sloping to moderately steep gravelly ridges and fans located mostly in the northeastern part of the county. The unit is dissected by many intermittent drainageways. This unit occupies about 5.5 percent of the county, a total of approximately 64,880 acres. About 40 percent of the unit is Dix sods, 30 percent Eckley soils, 20 percent Chappell soils, and the remaining 10 percent soils of minor extent.