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i • <br />.. <br />~~ <br />1 <br />i <br />$2 SOIL SURVEY <br />Typic Torri(luvcuts <br />Tu-Typic TorriOuvcnfs are neark level and exces- <br />sively drained and occupy the flood plain of the Rio <br />Grande. Slopes are 0 to 1 percent. 1'he soih range from <br />loam to sandy loam :uxl are generalh str:Ltified and <br />underlain by sand and gravel at a depth of 8 to 20 <br />inches. On about °_0 percent of this unit the soil mate- <br />rial is deeper over sand and gravel because old stream <br />channels have been filled in. Llchtded in mapping are <br />gravel bars, Lvhich make up about 10 percent of the <br />unit. <br />Typic Torri0uaents are droughty. Permeability is <br />moderately rapid, and the available hater capacity is <br />logy. The hater table is gener:dly more than 3 feet deep, <br />but rises to 2 to 3 feet for short periods late in spring <br />and early in summer taken runoff is high from melting <br />snow in the mountains. Rwloff is slow. The erosion <br />hazard is slight. <br />Typic Torrifluvents are used mainly for range. Some <br />areas are used for wildlife. Some small al'ea5 are used <br />for irrigated small grain and alfalfa. Natural vegeta- <br />tion is cottonlvood and willows and an understorv of <br />grasses and sedges. Capability unit IVs-? irrigated, <br />VIIw-1 nonirrigated; not assigned to a range site. <br />IICg-34 fo GO inches; Bray (]OYR 5/ <br />dark )•ray (lOYR 4/1) mots <br />distinct ycllm+'ish brown (]a}' <br />I*le tirained; loose; mildly alkal <br />The .41 horizml is 8 to 14 inches thick <br />cla}' loam. The R°_g horizon is I4 to 35 <br />clap loam or loam. The OI horizon <br />pcdons. <br />~'a-Yaelinc loran. This nearly le <br />flood plains or low bottom land, m: <br />Creek in the souUleastern part of the <br />0 to I percent. This soil is subject to <br />lvhen runoff is high from melting sr <br />twins. Some areas are protected by <br />and canals. The hater table is at a c <br />to 21 inches. About 10 Irercent of thi <br />areas of Alamosa loam, 1$ Uercent <br />clay loam, and 10 percent moderateh <br />Runoff is slow. The erosion hazard i <br />This soil is used for irrigated small <br />irrigated meadon•, range, and wildlife <br />erally- too wet for crops that need ct <br />mer. 1\Ieadolvs are cut for hav or t <br />Some areas are used for waterfolL•1 m <br />unit Illlr-] irrigated, V}v-1 nonirriga <br />range site. <br />Vastine Series <br /> Villa Grove Series <br />The Vastine series consists of poorh• drained or <br />somewhat Uom•ly drained soils '20 to 40 inches deep The Villa Grove series consists of e <br />over sand and gravel. These soils formed in alluvium soils. Some areas are seeped fi•om <br />on flood plains m• bottom land. Slopes are 0 to 1 per_ soils famed in alluvium on broad a1G <br />cent. Elevation is 7,G00 to 8.000 feet. Natw•al vege_ are 0 to 7 percent. Elevation is ZE <br />tattoo is dominantly sedges, rushes, tufted hairgrass, Natural vegetation is dominantly all <br />and lcild iris. The average annual precipitation is about grass, greaselcood, and rabbitbru: <br />7 inches, the mean annual air temperature is about amwal Urecipitation is about 7 inches <br />41° F, and the frost-free season is 90 to ]00 days. air temperature is about 41° F, and 1 <br />In a representative Urofile the surface layer is black son is 00 to 100 days. <br />heavy loam about ]0 inches thick. The subsoil is dark ]n a reln•esentative profile the surf <br />gray and dark yellowish brown clay loam about ?4 brolvn sands clay loam about 8 inch <br />inches thick. The substratum is mottled sand and soil is dark }•ellolcish brolvn etas toar <br />gr:LVeI that extends to a depth of f,0 inches or more. thick. The subsU'atum is 1 G inches of <br />Permeability i. moderate, and the available a;tter heavy loam and light sandy clay low <br />capacity is moderate or high. Reaction is mildly alka- brolvn gr:tvell}• sands loam Ulat exte <br />line. The efective rooting depth is '?!1 to 40 inches. The Ii0 inches or more. <br />water table is at a depth of 1°_ GI •' I inches and is high- Permeabiliq is moderateh' slop-. 1'I <br />est in spring and summer. capacit}' is nutinl}• high, but in salir.. <br />These soils are used fur irrig:ted crops and fm• 11'ild- erate. Reaction ranges from mildlc <br />life and range. eratel}' alkaline. •fhe effective rootir <br />F.epresentative profile of 4~astine loam. 3b0 feet than Gr) inches. <br />north and 73 feet west ul' the southeast corner sec. '?.1. 'hhese soils :u•e used for irrigatr <br />T. 38 N.. R. 8 l;. range. <br />or-t inch to 0, undcrnntpn>rd nr~anir olatcrial rno<isunc Represeniatice profile of ~-illy C <br />mainlynr);ras<.I.Ir.all,lrunt nomin~. loam. 1.110 feet west and 7., feet ~., <br />At-n to nl inrh,•s; d:n'I\ ~rac uo}-r. 4n) hna\'y bla n'. <br />~ east corner sec <br />37 \ <br />R. S E. <br />:33 <br />T <br />Mark 1111} <br />l: '~; I1 Illnl %f; rulll Ulml II111• 1113L1111'I .. <br />. <br />, <br />. <br />yCnll\\'ISh 111'n\111 (In}'R 5'tll Illnlt ens ill h~\cr l' :LI-11 LI 3 InrI1CC; hl'n1r1! (Itl}~]~ i.. <br />pa rl; \crak uu•dium >ul~a uy;ld:u' 6lurky el ruoW l'O d:u'k In'n\cll IIUY P. :3,':31 rani <br />pa rti nl: t.. \I,~:Ik lira' cr:null;n•: sl it'htl~' hart, frl- >n~ucurtr~ ali{rhtly hard. rer, <br />ahln: mildly :116n11 roe; ,'h~:n' .nwnth hmind:n?'. ling ;clear snuurth 6ou nda rc. <br />R^_g'-111 L.. :S1 inJu•s: ca ril';;:1[~.d ,nL,r< ra n~(n I rnm ,;I:n' Ii_'1~ -c p. l:i inc•hrs; rcllnlcish hro\c <br />{111}1: :I/II l,. crlhnci>h bra\\n 111111; 5 II ,'la\' loran, dark ycllo\ci=h hrn\cn <br />Io:uu, dark 4rac Ilnl'R -0111 lu d:Lrk yl~lln\cish nwdrraic medium prisnlati~ <br />III'll\\11 (111} I( ~1'tl Illul<I; \Orak Illl'lhlllll ~Ilhalhll- IllndPl'a{C I11Cd1U111 $llhallnlll al <br />tar 1)Infk\' Sll'aClu1'P; Shchtl\' hal'+l, tTIahIP; Illlhlly Chf^ Wnt111llOU$ Cla 1' hhns <br />alkaline; clear snnluth I,.~LInJa ry. channels; mildly alkaline; cle~ <br />