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t;ountY Area. Colorado
<br />The average annual air temperature ranges
<br />9B to 50 degrees F, and the frost-free period
<br />from 60 to 130 days.
<br />in this unit are small areas of soils that are
<br />and very shallow over bedrock.
<br />~ rive vegetation is sparse. It grows in the small
<br />rNtof elusions and in cracks and fissures in the
<br />~ ~ op. It varies with elevation and consists of
<br />Ro y Mountain juniper, ponderosa pine, spruce,
<br />vario s shrubs and grasses.
<br />This unit is sad as wildlife habitat and for limited
<br />~pxrts of co struction material.
<br />yytdlNe such s marmots, eagles, hawks, squirrel, and
<br />ppr use this uni for cover and nesting areas, and they
<br />efttairt food from i eluded areas and nearby soils.
<br />TTrs map unit is capability subclass Vllls,
<br />rpnrigated.
<br />~-Sedillo gravel loam, 0 to 3 percent slopes.
<br />mp deep, well draine soil is old high terraces of major
<br />rlrrer valleys. It formed i cobbly glacial outwash.
<br />pevetion is 6,000 to 6,7 feet. The average annual
<br />precipitation is 13 to 16 in has. The average annual air
<br />ynperature is about 50 to 2 degrees F, and the
<br />ererege frost-free period is 10 to 130 days.
<br />Typically, the surface layer s brown gravelly loam
<br />about 6 inches thick. The upp r part of the subsoil is
<br />reddish brown very gravelly cla loam about 15 inches
<br />trick, and the lower part is bro very gravelly sandy
<br />clay loam about 6 inches thick. a substratum is pinkish
<br />White very cobbly or very gravelly Andy clay loam that
<br />extends to a depth of 60 inches o more.
<br />Included in this unit are about 15 ercent Nehar stony
<br />handy loam and small areas of Agu Fria loam.
<br />Permeability of this Sedillo soil is oderately slow.
<br />Effective rooting depth is 60 inches o more. The
<br />available water capacity is moderate. unoff is medium,
<br />end the hazard of erosion is slight.
<br />This unit is used mainly as rangeland nd for wildlife
<br />habaat.
<br />The native vegetation on this unit ism 'nly Indian
<br />ncegrass, junegrass, western wheatgrass, lue grama,
<br />munongrass, Fendler threeawn, big sagebr sh,
<br />dnerbrush, serviceberry, pinyon, and Rocky Mountain
<br />Nniper (rig. 9). Use of proper grazing and pla ned
<br />grazing systems are the most important pract es that
<br />can be used to maintain the quality and quanta of
<br />grasses. Seeding speeds up revegetation of ar as of
<br />rangeland that have deteriorated because of
<br />overgrazing, cultivation, and other disturbances.
<br />Developing livestock watering facilities, fencing, a d
<br />ceferring grazing improve the distribution of grazin and
<br />help to maintain the condition of the rangeland.
<br />Some areas of the unit support stands of pinyon d
<br />juniper. This unit is suited to this production. Woodla
<br />products such as firewood, fenceposts, Christmas tre s,
<br />and pinyon nuts can be obtained from the unit. It is
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<br />ble of producing about 16 cords of firewood per
<br />in a stand of trees that average 5 inches in
<br />eter at a height of 1 foot, if all limbs larger than 2
<br />inch sin diameter are used. Limiting soil disturbance
<br />when arvesting trees helps to minimize erosion.
<br />Seedin to adapted grasses may be needed in some
<br />areas a r harvesting. Low precipitation and the
<br />presence f brushy plants may influence seedling
<br />survival. Ar scan be maintained in pinyon and juniper
<br />by selective c ing, leaving small trees and a few of the
<br />larger seed pro cing trees, and controlling livestock
<br />grazing so that se dlings can become established.
<br />Wildlife such as ule deer, cottontail, coyote, and
<br />various birds use thi unit. They obtain their food from
<br />areas of rangeland an from nearby areas of cropland.
<br />Nearby areas of pinyon nd juniper provide cover and
<br />nesting areas. Suitable nagement for wildlife includes
<br />protecting the unit from ov rgrazing and maintaining
<br />areas of pinyon and juniper. reas of rangeland and tall
<br />grasses in fence rows and o corners of fields can be
<br />managed as wildlife habitat.
<br />This unit is suited to homesite nd urban development.
<br />Cobbles and gravel make excava 'ons for roads, utilities,
<br />and other development difficult. Th moderately slow
<br />permeability of the soil should be co sidered when
<br />planning for septic tank absorption fie s or lagoons.
<br />Sewage lagoons can be lined to reduc seepage.
<br />Absorption fields may need to be made arger than
<br />normal.
<br />Gravel on the surface limits recreationa development
<br />such as playgrounds, picnic areas, camp ar as, and golf
<br />courses.
<br />This map unit is in capability subclass Vls,
<br />nonirrigated. G~rpp gyn.
<br />60-Shalona l amr"This eep, well drained soil is on
<br />old high terraces. It formed in mixed alluvium derived
<br />from sandstone and shale. Slope is 1 to 6 percent.
<br />Elevation is 6,000 to 7,000 feet. The average annual
<br />precipitation is 14 to 18 inches. The average annual air
<br />temperature is 45 to 50 degrees F, and the average
<br />frost-free period is 110 to 130 days.
<br />Typically, the upper part of the surface layer is pinkish
<br />gray loam about 2 inches thick and the lower part is
<br />brown clay loam about 5 inches thick. The upper part of
<br />the subsoil is dark grayish brown clay loam about 7
<br />inches thick, and the lower part is brown clay loam about
<br />29 inches thick. The substratum is pale brown loam that
<br />extends to a depth of 60 inches or more. In some places
<br />the surface layer is light clay loam.
<br />Included in this unit are about 15 percent Agua Fria
<br />loam and small areas of Mikim loam and Harlan cobbly
<br />loam.
<br />Permeability of this Shalona soil is moderately slow.
<br />Effective rooting depth is 60 inches or more. Available
<br />water capacity is high. Runoff is slow, and the hazard of
<br />erosion is slight.
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