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Sinkholes form when water washes sediment into cracks and voids in the bedrock. These areas can be direct conduits for pollutants to enter groundwater as well as safety hazards. more… |
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There are nearly 11,000 known springs in Wisconsin. This page offers a short collection of facts ranging from most to fewest to largest. more… |
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We've recently completed a comprehensive study of Iowa County's groundwater resources. Four new factsheets interpret the information for the public. more… |
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No fragments remain of the meteorite that slammed into what would become western Wisconsin. But there is still a tell-tale scar on the landscape that 475 million years of weathering hasn't fully erased. Find out how geologists pieced together the story of the 4-mile-wide Rock Elm impact structure.
Also read about the April 14, 2010 meteorite that flashed across Wisconsin. more… |
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The Niagara Escarpment stretches from Wisconsin to New York. These beautiful cliff faces are home to many rare or endangered plant and animal species. more… |
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The Wisconsin State Historical Society added the Point of Rocks, an important outcrop along US Highway 12, to the List of Historic Sites. more… |
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We've been busy making a number of changes to our site. Here's a road map to help you find them. more… |
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Approximately 26,000 years ago, a glacier pushed its way across northern and eastern Wisconsin, scouring the landscape. more… |
Minerals of Wisconsin Database