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<br />Uu~ 1~~J5 <br /> <br />generally );j!lS(J<.:lory (or most U'>eS. As shown in <br />figUfl." 13. Luge areJ~ III :\ebrJsb and h:allSJs Jnd uther <br />\,(altl."rl'd lo.'alluns, ill..:ludinl! a (ev, rl\'er v'alleys, show <br />qUJnUlies g.'nl'rally Jv'ailabk where Ihe e~llmaled yield <br /> <br />per well ex..:eeds 500 gallllns pl:r 111111Ule, lIowever. mu.:h <br />of lhe weSll'rn i1nd northeaslern porllom shows less IhJn <br />50 g:tllon~ pef rfllnute. <br /> <br />AVAILABILITY OF GROUND WATER <br /> <br />FIGURE 13 <br /> <br /> <br />, <br /> <br />+ <br /> <br />UG!" <br /> <br />D.""",........... <br /> <br />............ <br /> <br />0"..'........ <br /> <br />~OLORA.OO <br /> <br />Long strelches of M'vcral stre:Ufl valleys bel'A een the <br />muuntalns Jno lhe ~IJ':laled p:lrl of Ihe basin ":OIlIJlII <br />JlluviJI dcpnsJ\,~ generally <.:JpJble of yielding. muderately <br />large 10 large quanfities uf WJter 10 wdh l300 gJllons <br />pl:r mlllutt' Of mllre I. These depmlls underlie nOI only <br />Ihe 1100d pl.um. bUI also terra..:e rt'mnants bordering the <br />1l110d plalll. bUmales of lht' average allnual ground. <br />water pUIllp.lge fur ea..:h Stale. based un the Iimlled dJla <br />a\'aibble. were Illaul." for lnn'e dlffercnt S.year periods, <br />JS Shllwn l'n rigurl' 14. <br />In some ar"'a'>, the lIldeJ'iing wlIhdrJwal IS causlIlg a <br /> <br />\ <br /> <br />,~ <br /> <br />-- _~'i:~..t'~....u , .-- <br />~OR"H DAKOTA <br /> <br />\ <br />\ <br />u~ <br />,0 <br />\ <br /> <br />\ <br />. <br />I <br /> <br />.- <br /> <br />r <br /> <br />..-,,~." <br /> <br />)ll~~t::>OTA <br /> <br />+ <br /> <br />f'/EHRAS"" r::;;;-"~ <br />"~~r <br /> <br />.--~, <br /> <br />KA~SAS <br /> <br />I.. <br /><;" <br />:i' <br />, <br />, <br /> <br />--~ !<lIS~~RI_.. <br />- L___ <br /> <br />~__n <br /> <br />dedlll~ In (he ~round.watef lable. S(lrne dedine In waler <br />table should be Jnti~'lpatcd, and adjustments in thc <br />natural hyJrJulic chara(\emtl~'S of the aquifer most <br />often \\'111 reb.lIan..::c Ihe (hanged ..:onditions due 10 the <br />wllhdrawals. lIowe\'cl. pwpeSSIW water-le'iel dedines in <br />~{)l1le ar...as. thai may be indkalivt.' of o\-er-t.sc, are <br />~'auslllg .'on..:ern In lhe pumpers. Although deeper <br />aqUifers and yield large volumes of waler, these waters <br />Jre highly mincrah/.ed The withdrawals for migalion <br />.:onstilule the g.realest single uS(' ufground water and far <br />cx..:eed all other uscs..:omblllt'd. <br /> <br />'1 <br />