The Wisconsin Geological and Natural History Survey (WGNHS) has been working to serve Wisconsin for over 100 years. Part of University of Wisconsin-Extension, we provide objective scientific information about the geology, mineral resources, and water resources of Wisconsin.
Macro invertebrates may be indicators of water quality in high chloride content streams. Grace Graham, our hydro geologist, continues her research on springs throughout Wisconsin.
Stay tuned for updates! https://wgnhs.uwex.edu/