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<br />OOJ~~' <br /> <br />I <br /> <br />I <br /> <br />- <br /> <br /> <br /> <br />^ <br /> <br />,', <br /> <br />LAND <br /> <br />. <br /> <br />,~~ <br /> <br />Nint'ly.~ix pCTc\.'nl of the b':lsin's tolal land are;) of 2.920.000 :H:rllS is ucvolcJ 10 <br />a~ricultllrl'. Ei;!hly-lIut"t' percenl of the agril.:uIIUrJ! bnd is in crops. 12 pen:cnt in pasture. lwo <br />pl'rct'1l1 in woodLinJ. anti tht' remaining three pen:cnt is in other agriculluf:J1 U:'.t'S.16) <br /> <br />land rl"murCl' areas are l'ornposcu of geograrhkally assoi."ialed land fl.'source units. <br />usually several thousand anes in \.''(1\.'111. that are charat,:krill'rJ by particular ralkrns of soil <br />(including slop(- <tIlU l'rosiolll. dim;llt', water resources. \;.tnd us\.' and typ\.' uf farming. Till' Iwo <br />land fl.'SOlIn:!,:' an.'as within tilt' Big Blue Uasin arc lksignalt'd as tht' Cenlral LOt'sS Plains and <br />tIll: .'\'t'brasb Kansas LOt'sS Drift lIills and art' shown un Figure 7. <br /> <br />Central Loess Plains <br /> <br />The C"-nlral Loess Plains Area comprises Ilt'<lrly S3 perCl'nt of the nasin and lit'S in t]w <br />cenlt:.!] ;]nu wt'skrn fWrlions of Ihe nasin. This rh.'arly kvel to gt'ntly rolling rLtill is overlain <br />.....ith Ilk'SS soil <lml is gen...rally qUIll: Jdaplabk (0 irrig:afton. Priv;J[t' systl'ms utili7ing ~rnund <br />W;Jh:r h:lve bet'n dL'\'('loPl'd to irrigate aboul ~5 pl'rCt'nt of Ihe cropbnJ. \\"Ih:al and g:r:l1ll <br />sorghums afe Iht' nuj(lf dry land crops whi!... corn is th... mosl importanl irrigakd crop. <br /> <br />Woodbnd occupies ~~.~OO acres of bnLl or aprro:'\im.llt'ly ont' pt'rcl.'nt of Ill(' lotal <br />resource area. <br /> <br />Nebraska and Kansas Loess Drift Hills <br /> <br />The ;\t'braska and Kan~s Lot'ss Drift lIills Art';) compris.:s 17 pl'teenl of th... basin and <br />lit's along the exltt'nle I.'astt:rn portion. The soil in this area is comprisl.'d of a v:lriahtl.' Ihicknl.:'Ss <br />of lot'S" owr glacial drift and is typit1~d by narrow str~all1 valleys scp:uah.'d by broad <br />undulating ridgt's. The: irrigation potential apl"\'ars to be sOIllt'what limited in this arca. Rainfall <br />is !!l.'nt'rally adt'quatt' for tht' prodw.:tion of wheat. corn, fel'd grains, and hay. Sewnty pcn:ent <br />of this rl.'sourn' art'a within tht' b:lsin is in cropland, ~O per.:'l.'nt in paslUrt' and four perc!.'nt in <br />wooJland. <br /> <br />land use within tll!.' Rt'soun:e Are-as dt'scrlbed is stlmmarill.'d in Tablt' J. <br /> <br />" <br />