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

Silurian-Devonian aquifer


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.


Potential Well Yields


Figure 83 Hydrograph of well completed in the unconfined part of the Silurian-Devonian aquifer at Cedar Rapids (83K)
downloadable tiff file J083.tif.gz (626K compressed)


Figure 84 Hydrograph of well completed in the confined part of the Silurian-Devonian aquifer at Dayton (128K)
downloadable tiff file J084.tif.gz (1.2MB compressed)

Figure 85 Map showing probable yield of water to wells in the Silurian-Devonian aquifer in Wisconsin (178K)
downloadable tiff file J085.tif.gz (1.6MB compressed)


Return to Silurian-Devonian aquifer text
Return to HA 730-J table of contents
Return to Ground Water Atlas home page