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Pennsylvanian aquifers

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: February 10, 2026 | Last Modified: 2020-11-17T00:00:00Z
This data set represents the extent of the Pennsylvanian aquifers in the states of Pennsylavania, West Virginia, Ohio, Virginia, Kentucky, North Carolina, Tennessee, Alabama, Illinois, Indiana, and Michigan.

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