GROUND WATER ATLAS of the UNITED STATES
Iowa, Michigan, Minnesota, Wisconsin
HA 730-J

Regional summary

There are two different files for each illustration

A 90 ppi JPEG file, suitable for screen viewing is accessed through the thumbnail image.

 

 

A tiff file is accessed through the "tiff file" link. All files are Adobe Photoshop. 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 tiff files as ascii, not binary.

Geology

Figure 9 Map showing crystalline-rock surface structural contour lines (215K)
downloadable tiff file J009.tif.gz (4.8MB compressed)

Figure 10 Map showing the extent of the major bedrock units in Segment 9 (200K)
downloadable tiff file J010.tif.gz (4.5MB compressed)

Figure 11 Section showing bedrock units across Iowa from the Forest City Basin toward the Wisconsin Dome (74K)
downloadable tiff file J011.tif.gz (1.5MB compressed)

Figure 12 Section showing bedrock units in the Hollandale Embayment (63K)
downloadable tiff file J012.tif.gz (965KB compressed)

Figure 13 Generalized section showing bedrock units in the Michigan Basin (194K)
downloadable tiff file J013.tif.gz (1.8MB compressed)

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