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Is
<br />SOIL SIIRVEY
<br />These soils are used for pasture, homesites, and indus-
<br />trialsites.
<br />Representative profile of Lonrrllont clay, 0 to :; percent
<br />slopes. located 500 feet north and 100 feet best of the south
<br />quarter of sec. 13. T. 3 fit., R. i 0 N.:
<br />.\II--0 to v inches, IIRh[ brownish-gear (9.5T 6%SI claT. gral'-
<br />tsh brown (^_aY -}/^_) when moist; weal:, medium,
<br />subangular blocky structure: hard, firm; calcareous;
<br />strongly alkaline; clear, smooth boundars~
<br />Al'_~ to '_'1 inches, Itght olive-brown (..SY 3l3) clay, olive
<br />brown (^_SY }/3) when moist; weak, coatse, snban-
<br />gular blocks structure: eztremelS hard, very arm;
<br />calcareous; strongly alkaline: diffuse boundary.
<br />Clcsen-21 to 31 inches, Ilght olive•brown (?.ST 5/3) clay
<br />with mans, medium. distinct yellowish-brown (lOYR
<br />5/}) mottles, dark grayish brawn (..SY i/3) when
<br />moist; massive; eztremelS hard, very arm; c~lcare-
<br />ous; common. fine to medium clusters or gypsum
<br />crsstals and raw, flee to medium, hard Ilme rnncrn
<br />nons; stronglS alkaline: Gradual, difuse bouudnrs.
<br />C:cscag-~31 to BO inches, pole-olive (5T tl/31 claT with com-
<br />mon, medium, distinct olive (5Y 4/3) mottles, olive
<br />(5Y 5/3) when moist; massive; eztremelS hard, very
<br />firm; calcareous; common. Sue [o medium clusters
<br />of gypsum crss[als and ten- to rnwnvm. flue and me-
<br />dium, hard lime concretions; maleratelS alkaline.
<br />The Al horizon ranges from L^ to '?} inches in thickness and
<br />from clay loam to clay or silts claF in [ezture. The C horizon
<br />ranges from heavy claS loom to ciaS in restore. In most places
<br />shale ie at a depth of more than 60 inches, but In a few areas
<br />It is between depths of -10 and 60 inches.
<br />Longmont clay, 0 to 3 percent slopes Iloel.-This
<br />soil is in the eastern part of the _t.rea. 3 few soil areas
<br />are somewhat concave. In most places this soil is in irregu-
<br />lar arensmore than 20 acres in size.
<br />Inclttcled with this soil in mapping is a Longmont-like
<br />soil tll:tt llas shale at a depth of less titan -10 incites. also
<br />included are small areas of Colbv silty clayy loam, wet,
<br />0 to 3 percent slopes: and small areas of Iisldt cloy, 0 to
<br />3 percent sloppes. These included soils make up about 10
<br />percent of encli mapped area.
<br />In mast places nmoff is slow. bttt some concave areas
<br />nee ponded. The erosion ]lizard is slight. Drlinage and
<br />removal of snit. and alkali are difficult because this soil is
<br />slowly permeable.
<br />a lmost all of the acreage of t]lis soil is in pasture, escept
<br />for some areas that are urbanized. Efforts to establish
<br />better stands of grass hive been partly successful.
<br />(Capability unit VIw-1, nonirrigated; tree suitability
<br />group 6)
<br />Loveland Series
<br />The Loveland series is made up of deep. somewhat
<br />poorly drained soils. These soils formed on terraces and
<br />bottom lands in loamy alluvium that overlies gravelly
<br />:tad sandy materials. slopes ate 0 to 1 percent. Elevations
<br />are x,000 to 5.500 feet. The native vegetation is mainly
<br />bluegrass and blue grams. annual precipitation is 12 to
<br />18 inches. Mean annual air temperature is 48° to 52° F.,
<br />and the frost-free season is about 1~0 to 155 days.
<br />1n a representative profile rite surface layer is cnlpr-
<br />eous, dark grayish-brown light clay loam about 30 inches
<br />thick. It is mottled in the lower part. The underlying
<br />material, about 10 inches t}lick. is strongly calcareous,
<br />grayish-brown light clay loam that is mottled. IInderly-
<br />ing this to a depth of 60 inches or more is mottled, light
<br />brownish eQray gravelly sand. In the surface layer and
<br />underlying material soil reaction is moderately alkaline,
<br />and in the substratum it is mildly alkaline. In most areas,
<br />g}'psum crystals and soft lime segregations ate present in
<br />some layers.
<br />Loveland soils have moderate permeability. available
<br />water capacity for the profile is moderate to high, depend-
<br />ing upon the depth to eery gravelly sand. Roots can pene-
<br />trate to a depth of 60 indtes or more.:md the seasonal
<br />lti~ll water table is at a depth of ? to ~ feet.
<br />~'llese soils are used for pasture and crops. )n some wrens
<br />t{tey are a source of gravel for construction.
<br />Representative profile of Loveland clay loam. 0 to 1 per-
<br />cent slopes, in an area of Loveland soils located ~ 0 feet east
<br />and 2,310 feet south of rite northwest corner of sec. 11, T.
<br />2 ~., R. 60 W.:
<br />Ail-0 to ll inches, dark grayish-Drown (lOYR }/^) light
<br />claS loam, very dark brown (lOYR "/2) when molsc;
<br />moderate, fine and medium, granular structure; soft.
<br />very friable; calcareous; modera[e1S alkaline; clear,
<br />smooth houndarS.
<br />dL^-ll to ?0 inches, dark grayish-brown (lOTR 4!'=1 fight
<br />cloy loam with common, medium, distinct Sellov.-ish-
<br />brown (lOYR 5/}) mottles, very dark brown (lOTR
<br />2/.1 whe¢ moist; weak, medium, subangular blocky
<br />structure: hard. Orm; calcareous; moderatelS alka-
<br />line; abrupt, smooth buuudary.
<br />Clesea-?0 [0 30 inches, grayish-brown f10FR 5/^.) light c1aS
<br />loam with common, medium, distinct, Sallowish-brown
<br />(lOYR 5/4 wad 8/tl) mottles, dark grayish brown
<br />(lOYR }/_) when moist; massive: hard. friable:
<br />scronglS calcareous; few [o common, flue to wedium
<br />clusters of gypsum crssmis, and commoo, medium
<br />and coarse, soft white Ilme segregatfoos; moderatelS
<br />alkaline; clear, wavy boundary.
<br />IIC4,--30 to 60 iachev. Ilght brownish-gray (lOYR 6/?) cars
<br />gravelly sand with many, medium. distinct, sCrong-
<br />brown (~.SYR S(tl) mottles. ~rapish broav (SOYR
<br />5/^-1 when moist, single grained: Inose rvhen dry and
<br />moist; mildly alkaline.
<br />The A horizon ranges from 18 to ^_3 inches in thickness and
<br />from sands clay Ioem to c1aF loam in [ezture. The C horizon
<br />ranges from loam to clnY loam or saadS claS loam in [ezture.
<br />Depth to underlying sand or gravel ranges Erom ''?0 to }0
<br />inches.
<br />Loveland soils (0 to 1 percent slo es) ILvI--These soils
<br />are on stream terraces an ttoms m t le eastern part of
<br />the .lees. In most places they are in irrea flat areas more
<br />than 20 acres in size.
<br />The profile of these soils is simil;tr to the one described :ts
<br />representative for the series. but the tenure of the surface
<br />layer ranges from sandy else loam to clay loom.
<br />Included with these soils in mapping is a Loveland-like
<br />soil that has n lighter colored surface laver..11so included
<br />ue gravel bats less than 1 acre in size, small areas of
<br />McClave clay loam, and areas of Viwot soils. These in-
<br />cluded soils and gravel bars make up about 15 percent of
<br />each ranpped area.
<br />Runoff is slow on these soils. The erosion hazard is
<br />slight.
<br />X11 of the acreage of these soils is used for irrigated
<br />crops or pasture. (Capability unit IIIw-1, irrigated; tree
<br />suitability group 5)
<br />Made Land
<br />Slade land (Mal is on nearh• level areas along St. Vrain
<br />Creek near the eastern edge of the 3rna. This land is
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