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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />002513 <br /> <br />40 <br /> <br />little or no changes in the quality of the Arkansas River <br />water. Irrigation improvements may make significant <br />improvements in the net returns to the landowner from crop <br />production. These benefits will be obtained from increased <br />production as well as reduction in irrigation labor cost. <br />Better irrigation water management will lead to better <br />management of other farm inputs, such as fertilizer and <br />pesticides. Crop budgets will have to be prepared to show <br />these effects. <br /> <br />Better irrigation water management can lead to preservation <br />or improvement in the water quality of groundwater. <br />Groundwater studies are needed to determine how the deep <br />percolation of irrigation water is interacting with the <br />groundwater aquifers. <br /> <br />An example of this is the Dakota Aquifer. This Aquifer is <br />being recharged by deep percolation in the Limestone- <br />Graveyard Creeks area. Better irrigation water management <br />will prevent lower quality water from entering into the <br />Dakota formation. To document this, water quality testing <br />of the shallow and deep aquifers will have to be conducted. <br />Trends in the water quality over time will have to be <br />established. <br />