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

Twin Bear Lake -- Twin Bear County Park

Location:

Twin Bear Lake has the following aquatic invasive species:
Chinese Mystery Snail, Eurasian Water-Milfoil, Rusty Crayfish To Excel
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DatePrior WaterbodyCountyWBICKnown Aquatic Invasive Species
10/04/2025amniconDouglas County0Information Not Available
09/21/2025OwenBayfield County0Information Not Available
09/20/2025spiritBayfield County0Information Not Available
09/20/2025chequamagon bayAshland County0Information Not Available
09/14/2025superiorAshland County0Information Not Available
09/13/2025Chequamagon BayAshland County0Information Not Available
09/13/2025NamakaegonBayfield County0Information Not Available
09/07/2025chequamagon BayAshland County0Information Not Available
09/06/2025chequamagon BayAshland County0Information Not Available
08/31/2025SuperiorAshland County0Information Not Available
08/30/2025superiorAshland County0Information Not Available
08/30/2025deltaBayfield County0Information Not Available
08/23/2025mudBayfield County0Information Not Available
08/16/2025nebagemonDouglas County0Information Not Available
08/10/2025deltaBayfield County0Information Not Available
08/10/2025grindstoneSawyer County0Information Not Available
08/10/2025roundBayfield County0Information Not Available
08/10/2025roundBayfield County0Information Not Available
08/03/2025mudBayfield County0Information Not Available
08/02/2025nabagemonDouglas County0Information Not Available
08/02/2025starBayfield County0Information Not Available
07/20/2025deltaBayfield County0Information Not Available
07/20/2025deltaBayfield County0Information Not Available
07/20/2025superiorAshland County0Information Not Available
07/20/2025superiorAshland County0Information Not Available
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