Page-sized and web-version maps of the Driftless Area and similar terrains in Wisconsin, Illinois, Iowa, and Minnesota

From the dataset abstract

The Driftless Area of southwestern Wisconsin and northwestern Illinois got its name from the lack of glacial sediment ("drift") covering the landscape. The surficial geology and topography of the Driftless Area are thus distinct from the surrounding region where multiple phases of glaciation left their mark. This pamphlet, a collaborative effort between four neighboring state geological surveys, describes and outlines the boundary of the unglaciated Driftless Area based on modern geologic evidence.

Source: The Driftless Area: The extent of unglaciated and similar terrains in Wisconsin, Illinois, Iowa, and Minnesota

Additional Information

Author Carson, E.C.; Curry, B.B.; Kerr, P.J.; Lusardi, B.A.;
Publication Year 2023
Series number ES057-map
Resource Type Map
Physical Description 1 p. (8.5 in x 11 in)
Geographic Area Pierce, Pepin, Eau Claire, Buffalo, Trempealeau, Jackson, Clark, Wood, Portage, LaCrosse, Monroe, Juneau, Adams, Waushara, Marquette, Vernon, Richland, Sauk, Columbia, Crawford, Grant, Iowa, Dane, Lafayette, Green
Tags Driftless Area, Surficial Geology, Geography
ISSN 1052-2115