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1 <br /> <br /> <br /> <br />i <br /> <br />1 <br /> <br />~.~ <br />~ - Aquolls and Agc~[sa cravc~_ substratum - J'1' <br />~ ~. ^f ~ tllcC.r~ f:. ~. <br />'flicse nearly level soils are on bottom lands and flood plains of all !~ <br />the major streams in tl,e survey area. The Aquolls, wl,lch have dark <br />colored surface layers, make up ahou[ 65 percent of file mapping unit. <br />The Aquen[s, which have lighter colored surface layers, make up about <br />25 percent. About 10 percent is Aquolls and Aquepts, flooded, and <br />Bankard sandy loam. <br />l :- <br /> <br /> <br /> <br />i <br /> <br /> <br /> <br />These Are deep, poorly drained soils. Thry Cornn•d in recant alluvium <br />Typically they have mottled, mildly to moderately alkalinr., loamy or <br />clayey surface layers and underlying material, And arc urnierlain by" <br />sand or sand and gravel wi[liin 48 inches. They may or may not have a <br />gleycd layer in the underlying material, <br />Pfost of these §oils are subJect ro flooding. A ,~atc,cablc i.s at or <br />near the surface early [n the spring and recedes to as deep ns 48 <br />inches by late fall in some years. <br />These soils arc used for rangeland and wildlife habitat. Some small <br />areas have been reclair_ed by major drainage and leveling operations <br />and is farmed [o irrigated crops. <br />71,e potential native vegetation on [l,ese soils is clon,inatcd by alkali <br />saca[on, switchgrass and western wheAtgrass. Sal[grASS, sedge, rush <br />and alkali bluegrass are Also prominent. [b [en[tal production ranges <br />Crom 3000 pounds per acre in favorable years to 2000 pounds per acre <br />in unfavorable years. l;hen range condition deteriorates, switchgrass, <br />.,. <br /> <br />i <br />~- <br />-` <br />~- <br />I~ ., • <br />f <br />1 <br />re r. <br />~' <br />I <br />i <br />^'l <br />-• ~>.~^ <br />•- ..:~.. .-tc. .:. ,~.... .. •- •.• <br />i ~ <br />