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<br />41-Fughes-Curecanti stony loam, 10 to 40 percent
<br />slopes. These strongly sloping to sleep soils formed in
<br />glacial oulwash, landslide deposits, end old alluvial fans.
<br />Elevation ranges from 6,500 to 6,500 feet. Average
<br />annual precipitation is about 76 inches, average annual
<br />air temperature is about 42 degrees F, and the average
<br />IrosLlree season is about fOD days.
<br />The Fughes soil makes up about 40 percent of this
<br />tomplez end is in swales, depressions, and drain-
<br />ageways. The Curecanti soil makes up about 4D percent
<br />and is on small ridges and convex side slopes.
<br />Included with these soils in mapping are a few small
<br />areas of Cochetopa and Bulkley soils and areas of Cryo-
<br />borolls, ver)• stony. Slips antl slides are common, espe-
<br />cially in disturbed areas. The included sons make up 2D
<br />percent of the complex.
<br />The Fughes sot is deep and well drained. It formed in
<br />old alluvial tans and in landslide deposits derivetl from
<br />sedimentary rock.
<br />Typically the surface layer of the Fughes soil is very
<br />dart, grayish brown stony loam about 5 inches thick. The
<br />subsoil is dark grayish brown clay loam Thal grades to
<br />reddish brown light clay and is about 39 inches thi='r..
<br />The Substratum, to a depth o1 60 inches, is light reddish
<br />brown clay loam.
<br />In the Fughes soil, permeability is slow and available
<br />water capacity is high. Effective rooting tiepin is 60
<br />inches or more. Sudace runoll is medium to maid. The
<br />hazard of erosion from wind is slight antl from r+al^: is
<br />high.
<br />On the Fughes soil the native vegetation consists
<br />mainly o. oakbrush, serviceberry, Arizona fescue, and
<br />western wheatgrass.
<br />The Curecanti soil is deep and well drained. If formed
<br />in glacial ouhvash and old 7ands!rde deposs.
<br />Typically the surface layer of the Curecanti soil is dart.
<br />grayish brown stony loam about 13 inches thick. The
<br />subsoil is dark brotm very gravelly or very cobbly clay
<br />loam about 29 inches thick. Tne substratum, to a tlepih
<br />of 6D inches, is yellowish brown very slo::y loam.
<br />In the Curecanti soil, permeabliry• and available water
<br />capacity are moderate. Effective rooting death is 6b
<br />inches or more. Surface runoll is medium to rapid. The
<br />hazard of erosion from rind is sl~ghl and Irom v+aler is
<br />moderate to high.
<br />On the Curecanti soil the native vegela:ion consists
<br />mainly of Gambel oak, serviceberry, grasses, and seat-
<br />leretl stands of aspen.
<br />Most areas of Ihis complex are used for grazing by
<br />kvestock and wildlife antl fn: recreational purposes.
<br />The potential plant community of Iha Fughes soil con-
<br />sists mainly of wheatg:asses, btuegrasses, and needle-
<br />grasses. As range condi;ion deteriorates, v:hea:g: asses
<br />and needtegrasses decrease, lorbs and v+oody shrubs
<br />increase, and undesirable weeds and annual plants
<br />invade and become more abundant.
<br />The potential plant community on the Curecanti soil
<br />consists mainly of Gambel oak, mountain brome, nod-
<br />ding brome, slender wheatgrass, and elY, sedge. As
<br />range condil~on deteriorates, mountain and nodding
<br />brome, slender wheatgrass, end elk sedgb decrees>,
<br />forks and woody shrubs increase, and unUesirable
<br />weetls and annual Planes invade and become more
<br />abundant.
<br />II range is in poor condition, seeding is advisable
<br />where slopes ere less Nan 20 percent and rvhare the
<br />soils are not stony. Big bluegrass, blucbunch wheat-
<br />grass, slender wheatgrass. and western wliea'~rass are
<br />suitable for seeding. Grasses that meet to:~ season{
<br />requirements of kveslock should be selected. N'her:r
<br />possible, preparing a seedbed and d:illrng the seed help
<br />to obtain the best results. Good pasture ;,nd rann'- man-
<br />agement is neetled to maintain the grasses. On some
<br />sties, control of competing shrubs 6 requ,retl to impro•+e
<br />range condition. Brush control shoulU be done on~y
<br />where sbpes are 20 percent or Jess. Secdad or ;;reshed
<br />areas should be fenced.
<br />The Fughes and Curecanti soils are us=_y br r+inter
<br />range by mule deer and alY,. Some important pant spa-
<br />des whmh can ba managed for optimum produUion are
<br />billerbrush, mounlainmahogany, Gambel oak, ssrvi~e-
<br />berry, and elk sedge. B_rry-producing shrubs are an im-
<br />portant habitat element of black bear. This soil p; o•+ides
<br />habitat for IJerriam turkey. hlue grouse, ar,d band~la'i+~
<br />pigeon In IavoraDle years, mature Gambel oaks produce
<br />acorns, which are used by f.7erriam turkey.
<br />II these soils are used for urban devclopmen!, the
<br />main kmilalidns are shrink-sv+all potential, s:on:r_5s, and
<br />slope. If Nay are used for septic lank absorpticn 1~~?Ids,
<br />permeabildy is also a limitation. The limi:a:ions can ba
<br />overcome by the us= of proper design and cons:ruc;ion
<br />methods.
<br />These soils are in capability subclass Vlls, r.onir:igat-
<br />ed.
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