Digital hydrogeologic surface of the Upper Claiborne Aquifer in Arkansas, Alabama, Louisiana,
Missouri, Mississippi, and Tennessee. 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.