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07/13/99 TqE 15:38 FAZ • • ®00-
<br />,v,~..
<br />SOLI. SURVEY
<br />filter the leachate. Sewage lagoons regairn seslSng.
<br />Lawns shrubs, and trees grow well Capability aubelaag
<br />Its irrigated.
<br />2-Altvan loam, 1 to 8 percent slopes. This is a deep,
<br />wall drained sm7 m fences at elevations of 9,500 to 4,900
<br />lest Tt formed in old alluvium deposited 69 tae ro.~jer
<br />rtvera. Included in mapping are amaIl areas of sons that
<br />show evidence of poor dralaaga Alga included era small,
<br />tong sad aatrow arena of nand sad grave] d¢podta.
<br />TypteaIty the surfax Igyer of this Altvan eoIl la grayish
<br />brows loam about 10 inches thick The snbaoIl is brown
<br />and tight YeIlowlah brown clay foam and sandy clay loam
<br />shoat ld inches thick The aubstratam to calcareaue loamy
<br />sand about 5 inches thick over gravelly sand.
<br />Permeab1lity and avagable water capacity are
<br />moderato. The effective rooting depth is 20 to 90 inches.
<br />6urleee runoff L medium, and the erosion hazard fa low.
<br />This soil ie used ahnoat mtixely Sar irrigated crops. It
<br />is suited to all crops commonly grown in the areq iaelnd-
<br />iag mrn, auger beets. beans, alfalfa, ervall grain, pobtoes,
<br />and onions. An example of a suitable stopping system is 3
<br />to 4 years of alfilla followed by corn, corn for G~ .
<br />sugar beets small grain, or besaa. Laced leveUag, ditch
<br />Haing, and inatalUng pipelbtea taffy be aeedcd for proper
<br />water appSmtion.
<br />All methods of iriigatlon are auttablq Lai fnrraw ir-
<br />rigation is the most common. Bat7;yard manure sad com-
<br />mercial fertIlizer are needed for top yields.
<br />Windbreaks and mviraameatal pbmtlna of trees sad
<br />shrubs commonly grown >n the area are generally well
<br />suited to this soil. Cultfvat[oa to eantrol competing
<br />vegetation chauld be coatfaved far as many years ae
<br />possible following plaatiag. Tms that are best snibd and
<br />have good sarvivel am Rocky Mountain jtmiper, easterA
<br />xdcedar, ponderosa pine, Siberian elm, Rusatan-0live, and
<br />backberry. The shrubs best suftad ere akunkbttah sumac,
<br />h7ac. 6iberfan pea9hrab, and American plum.
<br />Tide aoIl ten produce habitat elements that are highly
<br />suitable for opmlaad wildlife inchrdiag pbaasaa; eatton-
<br />taU, and mourning dove. Such crops sa wheat, corn, and
<br />alfah:a provide suitable habitat for apmland wIldlife,
<br />~~Y pheasant Tree sad ehrgb Dlantings and
<br />tmdianu~bed nesting cover would etrhante openiand wt1-
<br />dltfe popoLtiona
<br />This Altvan soIl has fair to good potentlal for urban
<br />sad recreational development. The chief llmitiag aril fea-
<br />ttu~ea for nrbaa developmaat ax the shrink-swaII poten-
<br />tial of the subsoil as it web sad dries and the rapid
<br />perateabIlity of the saAd and grave] substratum. Septic
<br />tank absorption fields function properly, but in pLcea the
<br />aubatratum dace not sustain mongh ftaea to properly
<br />frlWr the leaebate. Saaaga lagome require seating.
<br />Lawns, shrubs, and trees grow well. Capability subclass
<br />II fed.
<br />~' uol and Aquenta, gravelly substratum. Tlda
<br />nearly av map n om as s sn o plains
<br />of all the major streams in the survey area. AquoUs,
<br />which have a dark rnlored surface layer, make up about
<br />60 patent of the unit. Agaenta which have a liE
<br />mlored surface layer, nuifce np about 8b percent. Abc
<br />percent is Aquepb and 8ankard sandy loam.
<br />Thex sae de¢P, poorly drained soils that forme
<br />rexnt aUwinm No one pedon is typical Commonly
<br />soils have a mottled, mildly alkaline to moderately
<br />kalina ]Dams or clgyeY sarlatw layer ~ aaderl
<br />material and are underbtin by sand or sand and gr
<br />within 98 inches. Ice phases they Lave a gleyed layer fr.
<br />uaderlYying material.
<br />Most of the acreage to subject to flooding. The w
<br />table is at or near the surface early in spring and m~
<br />to as deep as 98 inches late in fall in some years
<br />These Dolls are used for rangeland and wIldlife hah
<br />Some small areas have base xdaimed by major chair
<br />and leve]ing and arc used far irrigated trope
<br />The poientbl native vegetation is dominated by e]
<br />eacatan, swltcbgrasa and western wbeatgraaa. Ssltgr
<br />sedge, rtul~ sad alkab bluegr~as are also promin
<br />PotentSal production ranges t7rom 8,000 pounds per err
<br />tavonble years to X000 pounds in unfivera6ln years.
<br />I9age ooadition deteriorates, the awftehgsaes, al
<br />eacaton, and western whestgrasv decrease and saltgr.
<br />sedge, sad rush ffietrase.
<br />Management of vegetation should be based an tak '
<br />half and leaving half of the total annual produetiaa Se
<br />ing S8 dif$nilt and costly because numerous tillage pt
<br />does are rnqutred to eliminate the salt>trass e
<br />SwitchgraBa western wheatgraaq aIlorli aaeatoa,
<br />wheatgrise, and tall fescue am suitable for needing. T1
<br />can be seeded into a clean, firm roadbed Seedt
<br />pnpantidn usually requires mate than 1 year
<br />eliminate the saltgrass sod. A grass drill should be as
<br />Seeding early fn spring has proven most aucoeesful.
<br />Wetland wildlff& especia]]y waterfow>, vmize this w
<br />The wetland plarrta provide aestmg and protectve cpv
<br />as well as some food. The nearby irrigated croplw
<br />where wIldUfe obtain mach of heir food and find prop
<br />five rover, makes this unit vabrable to both wetland a
<br />openland wildlife.
<br />Openlaad wildUfe, eapeciaIly pheasaa; use this unft i
<br />cover and nesting. Deer £md excellent cover in sot
<br />areas
<br />These valuable wIldlife areas should be protested in
<br />fire and fenced to prnent encrpaebmmt and overuse 1
<br />iivptoek. Thty should not ba drained.
<br />These soils have good pobntlal os a sautes of sand ~
<br />gravel Capabt7ity subclass VIw; Salt Mwdow range site
<br />4-Aquolla end Aquepta, flooded. This nearly lac
<br />map unit is in depresaiona in smooth plains and along tl
<br />bottoms of natural d:einegewaya throughout the sure.
<br />area. Aquolle, which have a dark colored surface ]aye
<br />make up about SS percent of the unit Aqu¢pta, whip
<br />have a lighter celored surface layer, make up about
<br />percent About 20 percent is aoUs that an well arsine
<br />and soils that have sandstone or shale within 48 inches
<br />the surface.
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