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

Lake Mendota -- Warner Park

Location:

Lake Mendota has the following aquatic invasive species:
Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Japanese knotweed (Fallopia japonica), Rusty Crayfish, Spiny Waterflea, Zebra Mussel To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
08/22/2025Island LakeRusk County0Information Not Available
08/08/2025Twin Valley LakeIowa County0Information Not Available
08/08/2025Lake ArbutusJackson County0Information Not Available
08/03/2025Lake KegonsaDane County0Information Not Available
08/03/2025Lake WisconsinColumbia County0Information Not Available
08/03/2025Rock LakeJefferson County0Information Not Available
08/03/2025Lake WaubesaDane County0Information Not Available
07/26/2025Wisconsin RiverPortage County0Information Not Available
07/26/2025Big Eau Pleine ReservoirMarathon County0Information Not Available
07/26/2025Lake RedstoneSauk County0Information Not Available
07/25/2025Lake ArbutusJackson County0Information Not Available
07/25/2025Lake KegonsaDane County0Information Not Available
07/25/2025Lake MononaDane County0Information Not Available
07/23/2025Lake WisconsinSauk County0Information Not Available
07/23/2025Lake KegonsaDane County0Information Not Available
07/20/2025Lake MononaDane County0Information Not Available
07/20/2025Lake MononaDane County0Information Not Available
07/20/2025Green LakeGreen Lake County0Information Not Available
07/16/2025Rock RiverDodge County0Information Not Available
07/06/2025Lake MononaDane County0Information Not Available
07/06/2025Lake Monona Dane County0Information Not Available
07/06/2025Lake KegonsaDane County0Information Not Available
07/06/2025Lake WisconsinColumbia County0Information Not Available
07/06/2025Lake Wisconsin Columbia County0Information Not Available
07/06/2025Lake KegonsaDane County0Information Not Available
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