This map shows 15 general soil regions of Wisconsin. On the landscape, many of these regions appear distinctly different from each other because differences in land form and use are often related to the characteristics of the soils. Map is available from ~ University of Wisconsin-Extension, GNHC, and Wisconsin Geological and Natural History Survey. F.w. Madison, Wisconsin Geological and Natural History Survey H.F. Gundlach, U.S. Department of Agriculture, Soil Conservation Service. 1993.