GROUND WATER ATLAS of the UNITED STATES
Iowa, Michigan, Minnesota, Wisconsin
HA 730-J
Pennsylvanian aquifer
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Introduction
Figure 50 Map showing location of the Pennsylvanian aquifer (128K)
downloadable tiff file J050.tif.gz (1.1MB
compressed)
downloadable tiff file J050.tif.gz (1.1MB
compressed)