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Wisconsin's glacial landscapes
Approximately 26,000 years ago, a glacier pushed its way across northern and eastern Wisconsin, scouring the landscape. more |
 Wisconsin core samples from our repository
Job opening: Sedimentary geologist
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Sinkholes in Wisconsin
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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Climate change leaves some communities under water, others high and dry
In the past few years, Wisconsin has experienced weather extremes. In southern Wisconsin, many communities are struggling with flooding and high lake levels. In the north, lakes are drying up. Learn about the complex interactions between climate change and groundwater and surface water, and what can be done. more |
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Winnebago County report released
Winnebago County's landscape was heavily shaped by glaciers. This new report by geologists Thomas Hooyer and William Mode narrates the geologic history of the area. more |
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Effects of groundwater pumping on Geneva Lake region
Geneva Lake, the gem of Walworth County, draws people to its shores. But the same groundwater that fills the lake is increasingly needed by growing communities and businesses. This groundwater flow model, developed by WGNHS, helps citizens and local officials make informed decisions about their water supply. more |
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Large meteorite crater in western Wisconsin
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. more |
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Minerals of Wisconsin database
Wisconsin is rich in minerals. Geologist Bill Cordua has cataloged detailed information for over 300 minerals found in the state. more |
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Human viruses found in Madison's
deep-water supply wells
WGNHS teamed up with the USGS and the Marshfield Clinic to study the occurrence of viruses in Madison's deep water-supply wells. The results were unexpected and point to the vulnerability of deep wells to contamination as well as the importance of chlorination. more |
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