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Midway Confining Unit: Alabama, Arkansas, Illinois, Kentucky, Missouri, Mississippi 2006-2008

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 07:29 PM | Dataset Last Updated: November 17, 2020 at 12:00 AM
Digital hydrogeologic surface of the Midway Confining Unit in Alabama, Arkansas, Illinois, Kentucky, Missouri, Mississippi. The hydrogeologic unit dataset contains 414 rows and 394 columns representing 1-mile grid spacing. In general, limitations of data interpolation included areas of sparse geophysical log control points, log datums not clearly defined for some logs, unknown exact extent of each hydrogeologic unit in subcrop, interpolation limitations, and values averaged over 1-mile grid spacing.

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