Contact information
For information on Lakes in Wisconsin, contact:
DNR Lake
Division of Water
Bureau of Water Quality
Aquatic Invasive Species Contacts

European Frogbit

Select Another Location:

Total Locations: 46
Total Lakes and Rivers: 24 *

Disclaimer: Aquatic invasive species (AIS) records are assigned statuses of "verified", "observed", or "no longer observed" based on AIS Status Guidance. In general, "verified" populations are established and have been verified by a taxonomic expert. Populations with the "observed" status have not been verified by a taxonomic expert or do not have established populations. Populations with the "no longer observed" status include populations where a reproducing population did not establish. Our inventories are not necessarily exhaustive so it is important to report occurrences. To report new discoveries visit: See the Aquatic Invasive Species Guidance for information on how statuses are assigned. Personally identifiable information on data collection forms may be provided to requesters to the extent required by Wisconsin's Open Records Law [ss. 19.31-19.39, Wis. Stats.].

By County | By Waterbody | By Species | By Year | Open In Excel
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WaterbodyStatusWaterbody ID Code (WBIC)CountyYear First FoundDetails
Bay RoadVerified Oconto2021 Details
Bay shore from Thompson Park to Dyers Slough AND Bay shore & Wetlands -South of Harbor Rd -Boat Launch to Thompson ParkVerified20Marinette2022 Details
Bay shore from University to Seagull Bar SNAVerified20 2023 Details
Canal East of Johnson RdVerified  2023 Details
Canal LaneVerified5582044Marinette2022 Details
City Park DitchVerified  2023 Details
County Y- County Rd A to Red Cedar Rd, and Laveau Ln
DE Hall ParkVerified20Oconto2022 Details
Drainage 9Verified Oconto2023 Details
Dyers SloughVerified and Vouchered515400Marinette2021 Details
Fish Creek EstuaryVerified and Vouchered20Door2022 Details
Hale RdVerified Oconto2021 Details
Harbor RoadVerified Marinette2022 Details
Kunzer Beach LaneVerified20Oconto2022 Details
Little Sturgeon Bay - West of Keyes IslandVerified and Vouchered5012298 2022 Details
Little Suamico RiverVerified and Vouchered411800Oconto2022 Details
Little Tail Point - Coastal Wetlands S of Hook RdVerified and Vouchered20 2022 Details
Little Tail Point Interior - Bayside Road UnitVerified20 2023 Details
Little Tail Point Interior - Coastal Wetlands S of Resort RdVerified and Vouchered20 2023 Details
Little Tail Point Interior - Unnamed Stream 3000549 Coastal WetlandsVerified and Vouchered Brown2023 Details
Long Tail PointVerified and Vouchered Brown2023 Details
Menekaunee Walking TrailsVerified and Vouchered3000612Marinette2021 Details
North Bay Shore Park Verified5534059Oconto2021 Details
Oconto RiverVerified440200Oconto2022 Details
Oconto Sportsmens' MarshVerified5591937Oconto2021 Details
Pecor PointVerified20 2023 Details
Pensaukee River Verified412900Oconto2022 Details
Peshtigo RiverVerified and Vouchered515500Marinette2022 Details
Seagull Bar SNAVerified and Vouchered20Marinette2021 Details
Sensiba Unit Exterior Ponds - SouthVerified and Vouchered Brown2023 Details
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* Total Lakes and Rivers = total unique Waterbody ID Codes (WBICs). If a waterbody, such as a small pond not in the DNR 24 K Hydrolayer, doesn't have a WBIC, it isn't currently counted in the total.

** Purple Loosestrife - DNR has only a partial list of locations. For more extensive data, visit the Great Lakes Indian and Fish Wildlife Commission (GLIFWC) website [exit DNR].

** Fish species - This web page only has a partial list of locations. For more extensive data, visit the Wisconsin Department of Natural Resources Map of Distribution of WI Fish Species [exit DNR].