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 -- Marshall Park Boat 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
08/26/2025Two Sisters LakeOneida County0Information Not Available
08/17/2025Wisconsin RiverIowa County0Information Not Available
08/14/2025Wisconsin RiverSauk County0Information Not Available
08/06/2025Lake MononaDane County0Information Not Available
08/03/2025Lake MononaDane County0Information Not Available
08/03/2025Lake WisconsinColumbia County0Information Not Available
08/03/2025Lake WaubesaDane County0Information Not Available
08/03/2025Lake WisconsinColumbia County0Information Not Available
08/03/2025Lake Monona Dane County0Information Not Available
08/03/2025Lake Pukaway Green Lake County0Information Not Available
08/02/2025Bessie Babbet LakeFlorence County0Information Not Available
07/25/2025Lake MononaDane County0Information Not Available
07/18/2025Lake Michigan Ozaukee County0Information Not Available
07/18/2025Lake Osakisx-Minnesota0Information Not Available
07/18/2025Lake WaubesaDane County0Information Not Available
07/18/2025Lake MononaDane County0Information Not Available
07/18/2025Lake WaubesaDane County0Information Not Available
07/18/2025Lake MononaDane County0Information Not Available
07/18/2025Lake Monona Dane County0Information Not Available
07/13/2025Lake WaubesaDane County0Information Not Available
07/13/2025Lake KegonsaDane County0Information Not Available
07/13/2025Lake WinnebagoFond du Lac County0Information Not Available
07/11/2025Lake KegonsaDane County0Information Not Available
07/10/2025Lake WisconsinColumbia County0Information Not Available
07/10/2025Lake SuperiorBayfield County0Information Not Available
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