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to ~>z SIIRVET <br />lnclnded with this soil in mapping are small areas of <br />Cray-ttor silts cla}- loam, S to 9 percent slopes. and Reno- <br />1till silts clay- loam. 3 to ~ percent =lopes. These inchuled <br />=oils make rap about 20 percent of each mapped area. <br />Pyunoff is rtpid on this soil. The emsion hazard is high. <br />about TO percent of the acreage of this ;nil is used for <br />irrigated or dryland crops. The n•maining third is used <br />forpnstln•e. (Capabilit}-mtitsI\"e-l,irrigated.andl"Ie-1. <br />umtirrig:ded: hre snitabilin- group 3) <br />Colby silty clay loam, wet, 0 to 3 percent slopes <br />ICs31.-This soil is in upland callers in the northeastern <br />parr of the _\rea. \fo~t wrens art irregtdnrlT shaped and <br />orate than 15 acres in size. <br />The profile of this soil is ranch like the one described <br />as rrprewntatise for the series, but the nudcrlciug nmte- <br />rial i? a stratified calcarcotts silts clan loam and light <br />silt}- clay- char has salt nccunndatials. Tltr lower part of <br />the underlying material is faintly uwttled. <br />Included with thi? ?oil in mapping are small :u~eas of <br />Colby silty sine loam. 1 to 3 percent slolxs: and Weld <br />loran. l to :; percent slopes. These make up about 1:. per- <br />crnt of each mapped attn. <br />Rtmolf is medium on this soil. The erosion hnwrd is <br />:light to moderate. _>s a result of irrigatimt nn higher <br />Icing soils, rminly during summer. a seasonal high s-eter <br />fable is rat a depth of 2 to }fee[ iu tbts soil. <br />Most of the arreagr of this soil is cultivated, but some <br />mras an• used far irtigntal pnsnnr. (Capability unit <br />IIw-1. irri~ared: tree snitnbiliis _roup 8) <br />Colby-Gaynor association (5 to 9 percent slopes) <br />IC+I--This asstx•iatiat is on the uplands. mainly- in the <br />northeastern part of the area. It is about 33 percent Colby <br />silo- slat' loam. and nhrnrt :i0 percent Gaynor silts clay <br />loam. The Colby soil is near the tops and the bottoms <br />of slopes, and the Cacnor is mainly in the =_teelter middle <br />part. <br />Included with this association in mopping are a few <br />anal) nuns of Bhinglc loam. of rim soils. and of small <br />_~ravel-capped hitobs. The=y make up about IC. percent of <br />each mapped area. <br />Runoff is rapid at this soil nssociatirnt. The erosion <br />hazard is high. <br />all of ibe arrea!ne of this soil nssoci:uiou is used for <br />irrignn•d or rh;ylanrl crops or fm' pashtre. (Capability <br />units I\"e-l. irrigated, and CIe-1. nonirrigated: tree <br />atitability ~roup 8) <br />Collu~ial Land <br />Colbn'ial Innrl IC _' is in loner narrow galleys in the <br />w'rsrrltt pelt of for :1rra. Tbis~lnud tope vane= widelc <br />in depth. restore. color. reaction. and stoniness. The snr- <br />fnec later is mainly a smuh' loam drat contains r-nryirta <br />amount of stoats and cobtilrs. The underlying material <br />ranmrs front lnanty eaurl to clay. The soil nmteri:d range; <br />from 5hallmy to deep. Limy content ranges from strongly <br />caledrron- to noncalcareous. and reactiat ranges from <br />nentrdl to moderntrlc alkaline Most areas arc dark <br />colored. but smnc err light mlorrd. <br />('nlhn iul laud receicr? runod from nd.incrnt slolxs. <br />Thr erosion haruyl is high. Most areas of Colluyinl Imtrl <br />hose stoats mtd cobbles on the surface that interfem faith <br />ell ]fly:ll loll. <br />)lost of the acreage is used for crass. Some small local <br />areas that were once. farmed Lace bxn reseeded to grass. <br />Thew trseeded areas hays fewer stones on the surface. <br />ICapabilin- unit CIIs 1. nonirrigarcd: tree suitability <br />group 6) <br />Fern Cliff Series <br />The Fen Cliff series is made rap of deep. well-drained <br />soils. These soils formed in loamy raised alhtcium on <br />shoo faun and tallry- side slopes in the mountain area. <br />Slopes me la to fi0 percent. Elevations are 6,800 to 6.200 <br />feet. The native ec,~,etation is mainly- a forest of ponder- <br />osa pine. and Douglas-fir with a sparse tmderston~ of grass. <br />atmual precipitariat is 13 to 21 inches. \Icon ammal air <br />temper~antre is }3° to }7° F.. and the first-free season is <br />about 30 to 1?O dacs. <br />Iu a representative profile the surface layer is dark <br />grmrish-broarn stom- sandy loam about 8 inches thick- <br />Ihc subsurface laser. nbont lI inches tbirk. is light-gt•ey <br />stone sands loam. The upper pact of the subsoil. about 0 <br />inches thick, is light-gray and yellowish-brow-n stone <br />sandy lonw and sandy elm- loom. The sands clay loam is <br />in thin lavers and bands in the sandy loam. 1~he lower <br />t)mt of the snhsoil is light brownish-gray and yellowish- <br />brown stone sands clay loam and s¢udv loom about 31 <br />inches thic6. IIelow this is light cellaavish-bruaan sands <br />loam that contains mam• atones. <br />F'en: Cliff soils hate moderate to nmderatel}- rapid <br />permeability-. available water cnpacitr for the Profile is <br />moderate. Hoots can penetrate to a depth of GO inches or <br />mote. Moderate amounts of stone arc on the surface and <br />throughout the profile. <br />Reaction in the upper part of the surface layer is slightlc <br />acid, and in the subsurface layer it is utedium acid. In the <br />snbsnil and snhsrrntum i[ issliQhrh-acid. <br />These soils are used for pasture. for trcrention and <br />forests-. and for homes_itcs. <br />Typical profile of Fern Cliff stone sandy loam in Fern <br />Cult-aliens Park-Rock outcrop comples. ]5 to 60 percent <br />slopes. located ].}Oil fmt south and ~1.}OU feet west of the <br />northeast corner of sec .3. T. 1 \., R. 71 \C. <br />Ol~l inches to 2, andecomposed organic materiel. chieac <br />needles, beri and twigs. <br />02-2 inches to 0, partially decomposed organic matter ]Ike <br />that of the horizaa alwar. <br />-11--0 [0 3 int~es, dark graclsh-trcown (IOTA 1/2) stony <br />sandy loam, rare dark brown IlOYR °/?I wLen <br />moist; s[rovg, awe, crumb stracture: soft. vets iri- <br />eble: la to 20 percent stone; slightly acid: glee r. <br />emoo[L bonndery. <br />A2-3 to 20 (aches, tight-grac (lOTR ~/?) sends loom, gray- <br />ish brown fIOTR o/21 when moist; wen k. flue, Dla ty <br />structum [hat parts [o moderate gar gravular: soft. <br />eery friable; 15 [n '!U percent stoat: mediam acid: <br />gradual, n'aa7 boundary. <br />&A-?0 to 29 ivches, limit-graF pOTR ;/?I stoat' beast' <br />sandy loent grn)ish browv f10TA 5/2) when moist: <br />arrek, One, subeagular blocky structu te; Lorl:on cnn- <br />talas thin, tllscoatlauous, ycllowLh-brown (lOTR <br />5/i) snadr clay loam lamellae end seams that am <br />dark yellowish brawn (IOTA 4/i) ashen moist; is <br />saint places a soft mafri~ and yerr Lard lamellae, <br />and lu others a ern trlablr matrts antl Mable lamel- <br />Ine: thin. nearly matlnuous clay films ov pad faces <br />In lamellae: 30 percent n[ =011 ^orlri,n L stone; borl <br />eon Is slightly Dud: dlffnse, nary boundary. <br />+~-t i- <br />t ~ r - t <br />r <br />i .J~Jy <br /> <br />