U.S. Geological Survey

Iowa, Michigan, Minnesota, Wisconsin

HA 730-J

by Perry G. Olcott

Contents of HA 730-J, published in 1992

The text is available online with links to each figure, and as a downloadable ascii file
Illustrations are available online as screen-viewable JPEGs, and as downloadable tiff files suitable for printing and editing.
The references are available online, and as a downloadable ascii file.

The electronic version of these illustrations have been adapted for the web from the original print publication. Therefore data users are cautioned to consider carefully the appropriate use of this downloadable data.

The Atlas publication is intended for use as an introduction to the Nation's ground water resources, and as a teaching tool. For more information on how to purchase a copy of the printed Atlas please refer to the order form. ordering the print product.

Pertinent references are listed for each described aquifer to assist those needing additional information. Appropriate map scale is indicated by the representative fraction appearing over the scale bars. Interpretations concerning the appropriate use of these illustrations may be obtained from the Office of Ground Water, U.S. Geological Survey, 12201 Sunrise Valley Dr., Reston, VA, 20192.

Return to Ground Water Atlas home page