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)Year First FoundDetails
Brown County (6)
Little Tail Point Interior - Unnamed Stream 3000549 Coastal WetlandsVerified and Vouchered 2023 Details
Long Tail PointVerified and Vouchered 2023 Details
Sensiba Unit Exterior Ponds - SouthVerified and Vouchered 2023 Details
Suamico RiverVerified and Vouchered4109002023 Details
Unnamed Stream 3000552Verified 2023 Details
Unnamed Stream 3000555 (Lineville Rd)Verified30005552023 Details
Door County (1)
Fish Creek EstuaryVerified and Vouchered202022 Details
Marinette County (10)
Bay shore from Thompson Park to Dyers Slough AND Bay shore & Wetlands -South of Harbor Rd -Boat Launch to Thompson ParkVerified202022 Details
Canal LaneVerified55820442022 Details
Dyers SloughVerified and Vouchered5154002021 Details
Harbor RoadVerified 2022 Details
Menekaunee Walking TrailsVerified and Vouchered30006122021 Details
Peshtigo RiverVerified and Vouchered5155002022 Details
Seagull Bar SNAVerified and Vouchered202021 Details
Unnammed Stream (498000) AKA Spitzmacher CreekVerified4980002022 Details
West Shore Wildlife Area: Birding Trail Verified and Vouchered55334192021 Details
West Shore Wildlife Area: Spitzmacher Rd CanalsVerified and Vouchered202021 Details
Oconto County (18)
Bay RoadVerified 2021 Details
DE Hall ParkVerified202022 Details
Drainage 9Verified 2023 Details
Hale RdVerified 2021 Details
Kunzer Beach LaneVerified202022 Details
Little Suamico RiverVerified and Vouchered4118002022 Details
North Bay Shore Park Verified55340592021 Details
Oconto RiverVerified4402002022 Details
Oconto Sportsmens' MarshVerified55919372021 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].