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
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
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
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
