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<br />inches, the average annual air temperature is 47'
<br />' a d the average frost-free season is 126 to 142 day
<br />Et vation is 5,200 l0 6,500 feel.
<br />pically, the surtace layer is neutral, grayish bro n
<br />and ark grayish brown sandy loam about 7 inche thick.
<br />' The bsoil in the upper 11 inches is mildly alkali e,
<br />brown andy clay loam. In the lower 5 inches it i
<br />moder ely alkaline, very pale brown sandy loa .The
<br />' subslrat m to a depth of 60 inches is mildly al aline and
<br />modest y alkaline, very pale brown sandy I m.
<br />Include with this soil in mapping are sma areas of
<br />Nunn soils n fans; soils, in concave drains eways, that
<br />' have a dar surface layer more than 20 in es thick;
<br />Lavate and ritchell soils in areas adjace to red
<br />sandstone a shale; and soils, on the s pas of
<br />hogbacks, tha have a stony or cobbly mace layer.
<br />' Also included a small areas of Urba land. The
<br />included soils a Urban land make u about 15 percent
<br />of the total acre e.
<br />Permeability of is Ascalon soil i moderate. The
<br />' available water ca city is modem .The effective
<br />rooting depth is 60 ches or mor . Runolf is medium.
<br />Water erosion ands it blowing ar moderate hazards.
<br />The shrink-swell pole list is low o moderate. Rock
<br />' fragments make up 0 15 per ant of the volume.
<br />This soil is used mai y for azing, pasture, and
<br />wildlife habitat. In a few rea it is used for community
<br />' development and crops.
<br />The native vegetation i ainly western wheatgrass,
<br />blue grams, junegrass, an green needlegrass. The
<br />average annual productio fair-dry vegetation ranges
<br />t from 900 to 1,500 poun p acre. Proper grazing use
<br />and a planned grazing ste are needed to maintain
<br />the quality and quantit of des able plants and to
<br />prevent erosion. Peri is defer ant of grazing during the
<br />' growing season help maintain r.improve the range
<br />condition. Seeding eeds reveg lation in areas
<br />depleted by heavy razing, culliva 'on, or other
<br />disturbances. Sm I pastures com only are severely
<br />' overgrazed and oded. Livestock i small pastures
<br />should be kept i pens. The rest of t e pasture can be
<br />used as exerci areas and for very I ited grazing.
<br />' The establi ment and maintenanc of grasses,
<br />shrubs, trees and garden plants are li 'fed by the slope,
<br />A mulch of ant residue helps to reduc soil blowing
<br />and runofl, mprove filth, and conserve m isture.
<br />Applicatio s of manure and commercial f tilizers that
<br />contain n' rogen and phosphorus help to intain
<br />fertility. anling on the contour helps to co erve
<br />moistur and reduce erosion. Deep cuts ma in land
<br />' gradin should be covered with a layer of top oil.
<br />Supp mental irrigation is needed at the time planting
<br />and wring dry periods.
<br />' T e small areas of Urban land are covered by treats,
<br />pa ing lots, sidewalks, buildings, and other impe ious
<br />nmade structures. Because runoff is rapid, stor
<br />sins, natural drainageways, and land grading mu t
<br />Soil Survey
<br />ccommodate increased Ilows to prevent Iloodi
<br />d slope In areas that normally woultl not subject to
<br />flop i
<br />The As on soil is limited for use omesites mainly
<br />by slope. To it can be stockpile nd used to reclaim
<br />areas disturbed utting and ng. Cuts and fills
<br />should be seeded or ulch . Revegetating disturbed
<br />areas around a construe site as soon as possible
<br />helps to control soil wing. osion and sedimentation
<br />can be controlledla maintainin adequate plant
<br />cover.
<br />Most of areas that are used for c s are severely
<br />eroded. eeding them to grass helps check osion.
<br />T ' soil is in capability subclass Vle, in the L y
<br />lhill range site, and in plant adaptability group -
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<br />9-Baller-Rock outcrop complex, 15 to 50 percent
<br />slopes. The areas of this complex are on the hill slopes
<br />of hogbacks commonly associated with the Dakota
<br />Formation. The average annual precipitation is 15 to 17
<br />inches, the average annual air temperature is 47' F, and
<br />the average frost-free season is 126 to 142 days.
<br />Elevation is 5,600 to 6,500 feet.
<br />Baller soil makes up 60 percent of this complex, and
<br />Rock outcrop makes up 25 percent. Baller soil is on hill
<br />slopes, and Rock outcrop is on ridge crests and in
<br />eroded areas. ~' '
<br />Included in mapping are small areas of the stony
<br />Midway soils, which are underlain by shale, and areas of
<br />Leyden, Standley, Ulm, and Denver soils on hill slopes.
<br />Also included are small areas of Urban land. The
<br />included soils and Urban land make up about 15 percent
<br />of the total acreage.
<br />The Baller soil is shallow and well drained. It formed in
<br />noncalcareous, stony, loamy material derived from
<br />sandstone of the Dakota Formation.
<br />Typically, the surface layer is neutral, dark grayish
<br />brown very stony sandy loam about 4 inches thick. The
<br />layer below that is neutral, dark grayish brown very stony
<br />sandy loam about 10 inches thick. Hard sandstone is at
<br />a depth of 14 inches.
<br />Permeability of the Baller soil is moderately rapid. The
<br />available water capacity is low. The effective rooting
<br />depth is 10 to 20 inches. Runoff is rapid, and water
<br />erosion is a severe hazard. Soil blowing is a slight
<br />hazard. The depth to hard bedrock ranges from 10 to 20
<br />inches. The shrink-swell potential is low. Rock fragments
<br />make up 35 to 50 percent of the volume.
<br />Rock outcrop consists of exposures of sedimentary
<br />rocks, talus, and large boulders. In areas of Rock
<br />outcrop, plants can take root only in cracks and lissures.
<br />Runolf is rapid, but water erosion is only a slight hazard.
<br />Most areas of this complex are used as habitat for
<br />wildlife, recreation areas, and pasture. A few areas are
<br />used as a source of decorative rock and clay and for
<br />community development.
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