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

Rock Lake -- Sandy Beach Launch

Location:

Rock Lake has the following aquatic invasive species:
Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Yellow Iris, Zebra Mussel To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
06/28/2025Lake KoshkonongJefferson County0Information Not Available
06/28/2025Muskego lakeWaukesha County0Information Not Available
06/27/2025Lake KoshkonongJefferson County0Information Not Available
06/22/2025Lake RipleyJefferson County0Information Not Available
06/21/2025Lake RipleyJefferson County0Information Not Available
06/12/2025Mud Lake Lake MillsJefferson County0Information Not Available
06/11/2025Lake KoshkonongJefferson County0Information Not Available
06/07/2025Lake KoshkonongJefferson County0Information Not Available
06/07/2025Lake RipleyJefferson County0Information Not Available
06/07/2025Mud Lake Lake MillsJefferson County0Information Not Available
06/04/2025Oconomowoc lakeWaukesha County0Information Not Available
06/04/2025Lake RipleyJefferson County0Information Not Available
06/02/2025Lake KoshkonongJefferson County0Information Not Available
09/02/2024Fox LakeDodge County0Information Not Available
08/24/2024Lake Koshkonong Dane County0Information Not Available
08/24/2024Mud LakeJefferson County0Information Not Available
08/23/2024Lake KoshkonongDane County0Information Not Available
08/18/2024Fox LakeDodge County0Information Not Available
08/18/2024Lake MendotaDane County0Information Not Available
07/23/2024Test LakeJefferson County0Information Not Available
07/21/2024Okauchee LakeWaukesha County0Information Not Available
07/20/2024Lake RipleyJefferson County0Information Not Available
07/14/2024Okauchee LakeWaukesha County0Information Not Available
07/13/2024Big Muskego Lake Waukesha County0Information Not Available
07/13/2024Lake KoshkonongJefferson County0Information Not Available
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