The geologic map of the Eastman and Harpers Ferry 7.5-minute quadrangles (Crawford County), located in the Driftless Area of southwestern Wisconsin, provides new observations and lithologic descriptions of the area’s geology. This work supports …
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Geologic Map of the Ferryville and Lansing 7.5-Minute Quadrangles, Crawford County, Wisconsin
The geologic map of the Ferryville and Lansing 7.5-minute quadrangles (Crawford County), located in the Driftless Area of southwestern Wisconsin, provides new observations and lithologic descriptions of the area’s geology. This work supports the …
The WGNHS Mapping Status Portal: a new way to discover our maps
June 30th, 2025 Mel Reusche, WGNHS Communications and Outreach Specialist speaking with WGNHS Hydrogeologist Amy Wiersma Have you ever wondered what WGNHS maps are available for a specific area of Wisconsin? The WGNHS Mapping Status …
2024 Year in Review
Director’s Message I am pleased to share the Wisconsin Geological and Natural History Survey’s (WGNHS) 2024 Year in Review! It summarizes our main geological mapping projects, groundwater studies, data preservation efforts, and outreach activities from …
Depth to Silurian bedrock in Eastern Wisconsin
This Data Series is a depth-to-bedrock product for a large portion of eastern WI where Silurian dolomite is the uppermost bedrock. An online version of the map can be found here. This map can …
Unveiling the landscape: a new statewide map of the Quaternary Geology of Wisconsin
March 24th, 2025 Mel Reusche, WGNHS Communications and outreach specialist Ridges and valleys, lakes and marshlands, rolling hills and lakeshore cliffs – the landscapes we recognize across Wisconsin are the result of fascinating and complex …
Take note: making observations in the field
Survey geologist Sarah Bremmer stands on the side of the road with a blaze-orange vest and a notebook. She is conducting fieldwork for a new geologic map and is in the process of thoroughly describing …
Seeking Co-Designer for Map Accessibility Project
Seeking applicants for paid Co-Designer position We are seeking a Co-Designer with a visual or print disability or extensive related experience to creatively explore ways to make geologic maps more accessible. This position is paid …
Water Quality in the Chequamegon-Nicolet National Forest
This project in the Chequamegon-Nicolet National Forest was led by State Geologist Sue Swanson with WGNHS hydrogeologists G. Graham and Peter Chase, and is a collaboration with United States Forest Service. This data series …
Geologic map of Mill Bluff State Park, Monroe and Juneau counties, Wisconsin
The Geologic Map of the Mill Bluff State Park provides a detailed look at the bedrock geology present at one of Wisconsin’s most cherished natural sites. The map and accompanying report present the Paleozoic …