Aquatic Invasive Species
Contact information
For information on Lakes in Wisconsin, contact:
DNR Lake
Division of Water
Bureau of Water Quality
Clean Boats, Clean Waters Contacts

Geneva Lake -- Williams Bay Access (Village of Williams Bay)

Location:

Geneva Lake has the following aquatic invasive species:
Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Quagga Mussel, Rusty Crayfish, Starry Stonewort, Yellow Iris, Zebra Mussel To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
06/29/2026Beaver Dam Lake Dodge County0Information Not Available
06/29/2026pewaukee lakeWaukesha County0Information Not Available
06/28/2026silver lake Kenosha County0Information Not Available
06/28/2026phantom lake Waukesha County0Information Not Available
06/28/2026Fox lake x-Illinois0Information Not Available
06/27/2026lake Winnebago Fond du Lac County0Information Not Available
06/27/2026Delevan Lake Walworth County0Information Not Available
06/27/2026Delevan Lake Walworth County0Information Not Available
06/27/2026Lake Michigan x-Illinois0Information Not Available
06/27/2026Lal Lu Bell Waukesha County0Information Not Available
06/27/2026Pell Lake Walworth County0Information Not Available
06/27/2026lal lu bell Waukesha County0Information Not Available
06/27/2026Delevan Lake Walworth County0Information Not Available
06/27/2026Lake Shelbyville x-Illinois0Information Not Available
06/22/2026Lake delevan Walworth County0Information Not Available
06/22/2026voyaer lakex-Other Surrounding State0Information Not Available
06/22/2026fox lake x-Illinois0Information Not Available
06/22/2026Lake delevan Walworth County0Information Not Available
06/16/2026Lake Geneva Walworth County0Information Not Available
06/16/2026Delevan Lake Walworth County0Information Not Available
09/15/2025Lake DelavanWalworth County0Information Not Available
09/15/2025Lake DelavanWalworth County0Information Not Available
09/15/2025Lake comoWalworth County0Information Not Available
09/15/2025Twin LakesKenosha County0Information Not Available
09/15/2025Lake DelavanWalworth County0Information Not Available
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