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<br />$2 SOIL SURVEY
<br />Typic TorriOuvcnls
<br />Tu-Topic To n'i0ucrnts are nearly level and excCS-
<br />sively drained and occupy the flood plain of the pin
<br />Grande. Slopes are 0 to i percent. The sails range Irnm
<br />loam to sandy loam and are genet.nlly stralilicrl :uul
<br />underlain by sand and grace) at a depth of 9 to _0
<br />inches. On about 20 percent of this unit the sail nutle-
<br />rial is deeper over sand and grovel because nlrl stream
<br />channels have been filled in. Included in nutpping :u'c
<br />gravel bars, which make up about 10 percent of the
<br />unit.
<br />Typic Torri fluvents are droughts. Permenbilil}• i.e
<br />moderately rapid, and the available hater capacity is
<br />low. The tvaler table is gener;llly more th:ut ~ feel deep,
<br />bttt rises to 2 to :. feet for short periods late in spring
<br />and early in summer when runoff is high from melting
<br />snow in the mountains. Runoff is slow. The erosion
<br />hazard is slight.
<br />Typic Tmriflucents are user) mainly for range. Same
<br />areas are used fm' ttildlife. Snmc small vets :ue user)
<br />for irrigated mall gl,ain and al Lllf:t. Nntur;ll tegeta-
<br />tion is cottonwood and willows and an underslnrt of
<br />grasses and sedges. C:ymbilit> unit ICs-? irrigated,
<br />Vllw-1 nonirrigated; not assigned to a range site.
<br />IICg-34 to GO inches; gray (lOYR .ri/1) sand and grace),
<br />dark gray (lOYR A/I) moist; cmmm~n mrdiuut
<br />distinct ycllnmish brown (lOYR G/G) mottles; sin-
<br />gle grained; loose; mildly alkaline.
<br />The Al horizon is 8 to 14 inches thick and is loam or light
<br />rlae Inam. The R2g horizon is IA to 32 innc~s thick and is
<br />sloe loam or loam. The Ol horizmr is lacking in some
<br />pcrlons.
<br />~'a-Yastinc loam. This nearly level soil occupies
<br />Ilootl plains or Lott bottom land, mainly along Rock
<br />Creek in the southeastern part of the Area. Slopes ore
<br />0 to 1 percent. This soil is subject to flooding in spring
<br />when rtmnff is high Crum melting snore in the nuttnr-
<br />L•tins. Some areas are Protected by' drainage tlilches
<br />and canals. The water table is at a depth of about I°_
<br />to '?1 inches. About In percent of this unit is included
<br />areas nl' Alanutsa loam, lG Percent al'CaS of Tmsidn
<br />cla> loam, ;rod 1(I percent moderateh' saline areas.
<br />RunulT is slow. The erosion hazard is slight.
<br />This soil is used Cur irrigated small grain and alfalLt,
<br />irrigated meoulotr, rmtge, and tvilrllife. 'fhe soil is gen-
<br />ernlh tun wet for crops that need cultivation in suer
<br />mer. Aleaduws are cuC fur had m user) for grazing.
<br />Snore areas ore usefl for waterfowl nesting. ('ayrnbilit~'
<br />unit lllw-1 irrigated, \%a-1 nonirrigaterl; \hct ]\Ieaduw
<br />range site.
<br />~'aslinc Scrics
<br />The Vastine series consists of pom'IS rl rained or
<br />somewhat poorly rlrainerl soils 20 In Ile inches deep
<br />Deer sand and grace). 'T'hese soils formed in :Illtn illm
<br />~n flood plains m' bottom Innd. Slopes are 0 in 1 Iler-
<br />ent. Pleeation is 7,Ii11U In 9,OL10 feet. Knttn'al cege-
<br />` anon is LlominanLl}' sedges, rushes, lulled h;tirgrass.
<br />and wild iris. The aterage :unnlal Precipilntinu i. about
<br />7 inches, the mean annual air (enlperature is about
<br />41 ° F, and the frost-free season is 9n to In0 clots.
<br />In a represeutatice prtrlile the surface later is bl:ul:
<br />heavy loam about 111 inches thick. 'T'he sulisnil is rhn'h
<br />gray and dart: )'ellon'ish brntt'n slat Dram al~nut •t,l
<br />inches thick. The substratum is mottled snarl and
<br />gravel that extends to a depth of fu inches m' more.
<br />Permeabilih' is moderate. and the available ~tnter
<br />capacity is moderate ur high. P,eaclion is milrllt alka-
<br />line. The effectite routing depth is'LII to •In inches.'I•he
<br />water table is at a depth of 1'3 to °_d inches and is high-
<br />est in spring;uui summer.
<br />These soils are used for irrigated crops and for wild-
<br />life and range.
<br />Representatite profile of Vastine Inam, 2:~0 feet
<br />north and 7:i feet well of the suuthe:lst curllcr sec. ?u,
<br />T. 3R N., P.. R E.
<br />O]-1 inch to 0, undrrrnnpnscd organic umlcrial rnnsi stinC
<br />mainlc of Crass, Ina f, ;mrl roof nmmins.
<br />At-0 to 10 inches; d;u'k Cr:n~ IlU}'I: -0.'l) brace Inam.
<br />hlm'k (ln}'R 2/I) nmiV; common line di ~l inrl
<br />ycllu~cish brmrn (10}"1. 5!f,l nn M1llre in Inmrr
<br />part; mrnk nu•dium .uha uCUl:n Llork~ rl ru~turr
<br />pa rtiug In mr;ik Ihm Cr;nnila r; slil:htlc hard, fri
<br />- aLle; mildly alkaline: tlcar snuialh Lou nd:n'r~.
<br />R2g-10 to :{d inches; t;u'iegalyd colors ra nCinC linen Brat
<br />(III }'R 5/II hr yellowish Liro•cn IIU}'I: :~fll cla r'
<br />Inane. da rl: Crnc (InYR -0/1) f.. d:n~k yellnmish
<br />brume (111}~R ~I %41 umisl; mrak nirdium nnLancu-
<br />I Lv' blocks sl ructu rr; sliChfly hard, frm hlr; nri )ells
<br />alkaline; clear smooth Lou nrla rp.
<br />~'iila Cro~'c Series
<br />The Villa (:rote series consists of rleel~, urll rL'niued
<br />soils. Snmc ;ueas are seeped from irrigation. These
<br />soils formed in allutium ml brnarl alluvial loos. Slope;
<br />:ue 0 to 1 percent. lslecalimt is 7.Gn11 (0 7,900 feel.
<br />N:durul cegelntion is domin:nrkh' alkali sarnton, salt-
<br />grass, g~reasewond, :uul rabbilbrush. 'T'he average
<br />;unnl:tl preciPitatinn is abrntt 7 inches. the mean anneal
<br />;tie tempernttn'e iS about dl" F, and the frna-bee sca-
<br />sou is f1Q (0 1 flll da}~s.
<br />lu a representatite profile the surface Inmr is dark
<br />I)I'ott11 sa^d,' CIa1' Inalll abuttt 9 inches thick. The suh-
<br />snil is d:n~l: tellottish brottn clot loom ;Ilrnut 1:, inches
<br />thick. 'fhe substratum is 1G inches of tellnwish brmtn
<br />peaty loam and light ranch' cloy Inam m'er }ellou'ish
<br />hrmtu gracelh• sanrlc loam that extends to n depth of
<br />Till inches or mm'e.
<br />I'ermeabilih' is morleratel~' slow. The ;n nihthle water
<br />capacity is m;tinh' high, but in saline areas it is mnd-
<br />ernte. P,enctinn ranges from milrllt ;tlknliuc to mnd-
<br />er;ltelp alkaline. 'T'he effective muting depth is none
<br />lhnn f0 inches.
<br />'T'hese sails are used for irrigated crnl~s and fur
<br />r;utge.
<br />P.eprestnllntite gen)))e of Villa (~rncc sands cln~'
<br />loam. 1, I In feel west ant) 7:r feel south of the nartlr
<br />ensL corner sec. 3:3.'1'.:.7 N.. P,. R G.
<br />AI-U In 8 inrln•s; lirnwn (IUYh i,; a) sands cl:n' le:nn.
<br />d:n~k brown (IU}'R :S/3) moist; tr,,ak liar p~ra nnl:m
<br />nt rurlurr; slightly' boob sere frig Ll~•; mildly' alka
<br />liar.; clear smooth hounda rt.
<br />IS°_t--S to ]i. inches; cellnmish brm~n (Irl }'I: !/d) sloe
<br />main, dark yrllmtish brnvvn (111pR 3/4) nn~i=t;
<br />ntodp rate utrdium prismatic st rnrlu w• p;i rtinC to
<br />modrrnlr nicdiwn suhmiCul;u' Idnrl:c; hard, tine;
<br />thin cmninuous clay' lilms on prds and in root
<br />channels; mildly alkaline; clr;ar smooth 6ounda rc.
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