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USGS Groundwater Information

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Crystalline-rock aquifers

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list of sandstone aquifers



Groundwater percolates downward through the regolith which is a layer of weathered rock, alluvium, colluvium, and soil to fractures in underlying bedrock. The water moves from highland recharge areas to discharge areas, such as springs and streams at lower altitudes. This example is in the Piedmont and Blue Ridge Province.


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Page Last Modified: Tuesday, 14-Apr-2015 12:59:43 EDT