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, Spiny Naiad, Yellow Iris, Zebra Mussel To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
09/01/2025Oconomowoc LakeWaukesha County0Information Not Available
09/01/2025Muskego LakeWaukesha County0Information Not Available
09/01/2025Lake RipleyJefferson County0Information Not Available
08/26/2025Lake KoshkonongJefferson County0Information Not Available
08/05/2025Oconomowoc lakeWaukesha County0Information Not Available
08/05/2025Lake RipleyJefferson County0Information Not Available
07/28/2025Muskego LakeWaukesha County0Information Not Available
07/27/2025Lake KoshkonongJefferson County0Information Not Available
07/27/2025Fox LakeDodge County0Information Not Available
07/27/2025Lake RipleyJefferson County0Information Not Available
07/27/2025Lake KoshkonongJefferson County0Information Not Available
07/26/2025Lake KoshkonongJefferson County0Information Not Available
07/26/2025Oconomowoc LakeWaukesha County0Information Not Available
07/20/2025Lake RipleyJefferson County0Information Not Available
07/08/2025Fox LakeDodge County0Information Not Available
07/05/2025Lake KoshkonongJefferson County0Information Not Available
07/05/2025Muskego Lake Waukesha County0Information Not Available
07/05/2025Lake RipleyJefferson County0Information Not Available
07/04/2025Lake Ripley Jefferson County0Information Not Available
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
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