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<br />TABLE 1.--APPROYI F417E ACREAGE AND PROPORTIONATE EXTENT OF THE SOILS--Continued
<br />Soil Area Extent Soil Area Extent
<br /> Acres Percent Acres Percent
<br />Rockland-LOnetree complex, 10 Stony rough land-------------- 4,770 1.3
<br />to 100 percent slopes------- 2,530 0.7 Stony steep land-------------- 5,930 1.6
<br />Sampson loam------------------ 4,480 1.2 Stony steep land, cold-------- 10,270 2.8
<br />Sandy alluvial land----------- ~ 2,400 .7 Tarr7•all gravelly loam, f0 to
<br />Sandy wet alluvial land------- 4,480 1.2 50 percent slopes----------- 480 .1
<br />Satanta loam------------------ 1,320 .4 Tinytown-Cheeseman complex,
<br />Satanta loam, calcareous vari- 5 to 30 percent slopes------ 2,220 .6
<br />ant, 3 to 9 percent slopes-- 360 .1 Truckton sandy loam, 1 to 3
<br />Satanta loam, calcareous vari- percent slopes-------------- 560 .2
<br />ant, 9 to 25 percent Trvckton sandy loam, 3 to 8
<br />slopes---------------------- Z80 .1 percent slopes-------------- 480 .1
<br />Stapleton loamy sand, 6 to 30 Westcreek gravelly loam, 10 to
<br />percent slopes-------------- 1,700 .B 30 percent slopes----------- 200 .1
<br />Stapleton-Bresser associa-
<br />tion------------------------ 9,100 2.5 Total land---------------- 360,620 100.0
<br />1/
<br />Less than .OS percent.
<br />olive brown (2.sY 5/3) when moist; massive;
<br />very hard, very Friable; pH 6.8.
<br />The A and AC horizons are light sandy loam or
<br />coarse loamy sand. The Al horizon is 6 to 20
<br />inches thick and is thinnest in areas that were
<br />once cultivated.
<br />Blakeland sandy loam, I to 15 percent slopes
<br />(B1E).--this undulating to rolling soil occurs on
<br />uplands in the northern part of the Area. 'bst
<br />mapped areas are less than 160 acres in si:.e,
<br />Included with this soil in mapping are small
<br />areas of Truckton sandy loam, 3 to 8 p~~. cent slopes,
<br />Bresser sandy loam, 3 to 9 percent slopes, and
<br />Stapleton loamy sand. Also included are areas of
<br />Sandy alluvial land in drainage.+ays.
<br />Surface runoff is slow to medium, depending on
<br />slope. This soil is subject to severe soil blowing
<br />if it is tilled or cover is inadequate. The hazard
<br />of ~.~a ter erosion is slight to moderate. Gullies
<br />fon on the steeper parts of drainagci:ays.
<br />F1ost areas of this soil are in native grass and
<br />arc used for grazing livestock. Some areas have
<br />been cultivated in the past, but most of these areas
<br />h avc been seeded wich grass. I~ildlife habitat
<br />occurs in places. (Capability unit l'i e-3; Sandy
<br />foothill range site)
<br />BlaL.e land-Orsa association (1 to 4 percent slopes)
<br />(Bo).--7'h ese gently sloping soils are on foot
<br />slopes and alluvial fans in the northern part of the
<br />.4 re a. Flapped areas are long, irregular in shop c,
<br />and more than 20 acres in si_e.
<br />6lakeland soils make up abouc 50 percent of the
<br />acreage. They arc mostly on shall ridges and L:nolls.
<br />Orsa soils make up about 35 percent of the acreage
<br />and are mostly on foot slopes and in shallow
<br />sw ales.
<br />Included with these soils in mapping are small
<br />areas of Bresser sandy loam, 1 to 3 percent slopes,
<br />Kassler gravelly sandy loam, and Sandy alluvial
<br />land. Also included are small areas of a soil that
<br />is more red than, but otherwise similar to, Blake-
<br />land soils.
<br />Runoff is slow to medium. In cultivated areas
<br />the erosion hazard is slight to moderate and some
<br />gullies have formed. These soils receive runoff
<br />from soils at higher elevation.
<br />Dbst of the acreage is in native grass. A few
<br />small areas are used for dryfatmed grain or irriga-
<br />ted alfalfa. (Capability unit 11'e-5, dryland; IVs-1
<br />irrigated; Sandy Foothill range site)
<br />Bresser Series
<br />The Bresser series consists of well-drained soils
<br />[hat formed in sandy soil material deposited b}•
<br />wind and kate r. These gently sloping [o moderately
<br />steep soils are on terraces and uplands in the
<br />warmer, northern part of the Area. Slopes are 1 to
<br />15 percent. The vegetation is mid and tall grasses.
<br />Elevations are 5,500 to 6,600 feet. Annual precipi-
<br />tation is 15 to 19 inches. Fte an annual soil tem-
<br />pcraturc is !7° to 62° F., and the frost-free sea-
<br />son is 1:0 to 135 days.
<br />[n a representative profile the surface Layer,
<br />about 5 inches thick, is grayish-brown sandy loam.
<br />The subsoil, about 25 inches tliicl, is dark gra}'ish-
<br />bro~;n sandy loam and light alive-brown and brown
<br />sandy clay loam. The undo r]ying material is light
<br />EXHIBIT "D" - Wildlife, Water
<br />Resources, Vegetation and Soil Information 7
<br />Page 5
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