Contact information
For information on Lakes in Wisconsin, contact:
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)CountyDetails
2023 (16)
Bay shore from University to Seagull Bar SNAVerified20  Details
Canal East of Johnson RdVerified   Details
City Park DitchVerified   Details
County Y- County Rd A to Red Cedar Rd, and Laveau Ln
Drainage 9Verified Oconto Details
Little Tail Point Interior - Bayside Road UnitVerified20  Details
Little Tail Point Interior - Coastal Wetlands S of Resort RdVerified and Vouchered20  Details
Little Tail Point Interior - Unnamed Stream 3000549 Coastal WetlandsVerified and Vouchered Brown Details
Long Tail PointVerified and Vouchered Brown Details
Pecor PointVerified20  Details
Sensiba Unit Exterior Ponds - SouthVerified and Vouchered Brown Details
Suamico RiverVerified and Vouchered410900Brown Details
Unnamed Stream 3000552Verified Brown Details
Unnamed Stream 3000555 (Lineville Rd)Verified3000555Brown Details
Unnamed Stream 497500Verified Oconto Details
Wave Pointe Resort Little SturgeonVerified92  Details
2022 (14)
Bay shore from Thompson Park to Dyers Slough AND Bay shore & Wetlands -South of Harbor Rd -Boat Launch to Thompson ParkVerified20Marinette Details
Canal LaneVerified5582044Marinette Details
DE Hall ParkVerified20Oconto Details
Fish Creek EstuaryVerified and Vouchered20Door Details
Harbor RoadVerified Marinette Details
Kunzer Beach LaneVerified20Oconto Details
Little Sturgeon Bay - West of Keyes IslandVerified and Vouchered5012298  Details
Little Suamico RiverVerified and Vouchered411800Oconto Details
Little Tail Point - Coastal Wetlands S of Hook RdVerified and Vouchered20  Details
Oconto RiverVerified440200Oconto Details
Pensaukee River Verified412900Oconto Details
Peshtigo RiverVerified and Vouchered515500Marinette 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].