Yellow phenakite crystal

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What has WGNHS done lately?

Find out in our 2024 Year in Review

WGNHS News

  • Amy sits at a desktop computer, browsing the WGNHS Mapping Status Portal

    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 …

  • Sunset over Frog Bay

    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 …

  • Quaternary Geology of Wisconsin, map

    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 …

  • Scanned notebook page with a sketch of Wisconsin and the study region. Text reads "GRANT CO. BEDROCK. Mount Hope & Fennimore 7.5' Quads STATEMAP. 2020. 1:24000 scale mapping (1 cm = 787 ft= 240m). Applied focus of mapping: Bedrock geology/structure relationship to aquifer susceptibility to surface contaminants"

    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 …

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