GROUND WATER ATLAS of the UNITED STATES
Introduction and National Summary


Sandstone aquifers

There are two different files for each illustration

A 72 ppi GIF file, suitable for screen viewing is accessed through the thumbnail image.
An eps file, suitable for downloading to be printed or edited is accessed through the "eps file" link. Most files are Adobe Illustrator 6.0, exceptions are noted. These files have been compressed with GNU's gzip utility. If your web browser defaults to a screen display of the file, turn on the "Load to local disk" option before downloading. Download and process these eps files as ascii, not binary.

Sandstone aquifers

Figure 20 Map showing the location of the Cambrian-Ordovician aquifer system (48K)
editable eps file A020.eps.gz (228K compressed)

Figure 21 Correlation chart showing the geologic formations that comprise the Cambrian-Ordovician aquifer system (16K)
editable eps file A021.eps.gz (16K compressed)
Figure 22 Map showing the top-of-aquifer contours of the Mount Simon aquifer (52K)
editable eps file A022.eps.gz (240K compressed)
Figure 23 Map showing the movement of water through the St. Peter-Prairie du Chien-Jordan aquifer (44K)
editable eps file A023.eps.gz (256K compressed)
Figure 24 Map showing water level decline in the Cambrian-Ordovician aquifer system (40K)
editable eps file A024.eps.gz (164K compressed)
Figure 25 Hydrogeologic section showing flow of ground-water through the sandstone aquifers in southeastern Minnesota (40K)
editable eps file A025.eps.gz (120K compressed)
Figure 26 Map showing the dissolved-solids concentrations in water from the St. Peter-Prairie du Chien-Jordan aquifer (40K)
editable eps file A026.eps.gz (268K compressed)

Return to Sandstone aquifers text
Return to Table of contents
Return to Ground Water Atlas home page