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Aquifers on National Atlas Map Browser
Aquifers' Data
and Description
Aquifer Wall Map
USGS links
Water Resources
Ground-Water Information
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Cambrian-Ordovician aquifer system
Map of aquifer system including underground extent.
Description and map of sandstone aquifers.
Publication sources
- Olcott, P.O., 1992, Ground Water Atlas of the United States, Segment 9-Iowa, Michigan, Minnesota, Wisconsin: U.S. Geological Survey Hydrologic Investigations Atlas 730-J, 31 p.(see Cambrian-Ordovician aquifer system)
Batten, W.G., and others, 1997, Rock-stratigraphic nomenclature, lithology, and subcrop area of the Galena-Plateville bedrock unit in Illinois and Wisconsin: U.S. Geological Survey Water Resources Investigations Report 97-4054-B, 1 sheet
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