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USGS Groundwater Information

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Non-principal aquifer

Color bar in aquifer map color

Aquifer Links

Principal Aquifers Map

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Groundwater Information

Aquifer Basics Links

list of sandstone aquifers


Local aquifers


Local aquifers in bedrock in western Montana and Wyoming have sufficient permeability so that water moves laterally through them to recharge unconsolidated-deposit aquifers in an adjacent stream valley. Ultimately, the water is discharged from the unconsolidated-deposit aquifers to lakes or streams.


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Page Last Modified: Tuesday, 14-Apr-2015 13:00:26 EDT