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USGS Groundwater Information

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Non-principal aquifer

Color bar in aquifer map color

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Aquifer Basics Links

list of sandstone aquifers


Minor aquifers


Fractured zones at the contact between sandstone and shale beds and in fractured novaculite-chert beds are good locations from which wells can obtain water from the Ouachita Mountains aquifer in Arkansas.


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Page Last Modified: Tuesday, 14-Apr-2015 13:00:30 EDT