The Wisconsin Geological and Natural History Survey (WGNHS) has been serving Wisconsin for over 125 years. Part of the Division of Extension at the University of Wisconsin–Madison, WGNHS provides objective scientific information about the geology, mineral resources, and water resources of Wisconsin. We conduct research, map Wisconsin’s geology, and share information through our publications and outreach.
WGNHS News
Celebrating the career of WGNHS hydrogeologist Dr. Maureen Muldoon
Mel Reusche, WGNHS Communications and Outreach Specialist, Sue Swanson, WGNHS Director and State Geologist, and Moe Muldoon, WGNHS Hydrogeologist, retired WGNHS hydrogeologist Maureen Muldoon (Moe) retired this summer after a long and productive career, and we wanted …
October 29, 2026
Celebrating the career of WGNHS hydrogeologist Dr. David Hart
Mel Reusche, WGNHS Communications and Outreach Specialist, Sue Swanson, WGNHS Director and State Geologist, and David Hart, WGNHS Hydrogeologist, retired WGNHS hydrogeologist David Hart (Dave) retired this summer after a long and productive career, and we wanted …
October 29, 2026
Beyond Alt Text: Exploring innovative methods to advance the accessibility of geologic maps
Mel Reusche, WGNHS Communications and outreach specialist speaking with WGNHS Cartographer and GIS Specialist Caroline Rose Over the last two years, WGNHS cartographer Caroline Rose has explored ways to make spatial data—like geologic maps—accessible and …
June 30, 2026
2025 Year in Review
Director’s message In the last year, WGNHS published new and updated maps from some of Wisconsin’s most famous geologic regions, including the Baraboo Range and the Driftless Area. We also published the first statewide bedrock topography compilation in over 50 …
April 14, 2026- More
Hot off the WGNHS press
Generalized Map of the Quaternary Geology of Wisconsin
October 16, 2026Updated version of Depth to Silurian Bedrock in Eastern Wisconsin
September 30, 2026Bedrock Geology of Lafayette County, Wisconsin
September 30, 2026Elevation Rasters of Geologic Contacts, Southwest Wisconsin
August 18, 2026- More
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