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<br />001948
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<br />. ideal for preparation of cross sections. In almost all cases water levels were not available for all points in a given
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<br />_ross section. In some cases water levels were available for parts of some cross sections; however the data were
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<br />not capable of describing short-term changes in cross-sectional gradients. In the few cases when data were suffi-
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<br />cient, indications are that gradients along some parts of some cross sections became reversed. That is, for a given
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<br />set of wells, sometimes the gradient might be towards the river and sometimes the gradient might be away from
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<br />the river; however it was not possible to determine if such changes occurred routinely or even if they occurred in
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<br />Ground-water levels are controlled by recharge to and discharge'~{)nt~\aci.uife~I~~eIAtively simple
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<br />systems, recharge may consist only of precipitation, and dischar~~ may corr(i.s~~~~d~ e'Vapotranspiration
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<br />processes and ground-water withdrawals made using weI\s~\;tpen.~Jra~ th~~qw.(yr. However there are additional
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<br />.urces of recharge and discharge in the study area Qia(..~!>~ll2a;e th~'iQ6~Is?~tem. Some of these additional
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<br />sources, particularly those related to irrigatio~,~r~~~~S.~!~~j}j?(~~~"es from a natural setting. The sources of
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<br />recharge and discharge can be related to J:lyii~b:~' factbtii':0,,'"
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<br />The alluvial aquifer in the study~re~\l~;\liY(f.a~.a1ly connected to the Arkansas River. Accordingly, the
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<br />aquifer and the river can excJ:la:rtgf"Y;lr~~;'jf. t,h~w,~r-surface elevation in the river is higher than the water-table
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<br />surface in the sUrroundingaquife(ithen\t,h~,riye) provides recharge to the aquifer and vice versa. In addition, the
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<br />the short term.
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<br />FACTORS THAT AFFECT GROUND-WATER LEVELS
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<br />dures such as application.of 'Wate~4erived from surface-water diversions or locally withdrawn ground water, or
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<br />both. The aquifer also maidiscli'arge water to local irrigation and water-supply wells.
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<br />10
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