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

Lakes and Rivers With Invasives - 2021 Findings

Select Another Location:

Total Locations: 389
Total Lakes and Rivers: 206 *

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: https://dnr.wisconsin.gov/topic/Invasives/report.html. 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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WaterbodySpeciesStatusWaterbody ID Code (WBIC)Details
Bayfield County (5)
Bark BayQueen of the meadow (Filipendula ulmaria)Verified  Details
Shunenberg Lake Curly-Leaf PondweedVerified and Vouchered2743600 Details
Smith LakeCurly-Leaf PondweedVerified2743500 Details
W ditch Compton Rd S of Hwy 13Purple LoosestrifeVerified  Details
W. Bigelow St. Giant knotweed (Polygonum sachalinense)Verified and Vouchered  Details
Brown County (10)
Brown Co. northeast corner of N County Line Rd and Triangle Dr intersection
East side of WI-32 150 ft south of Scotchwood RdPhragmites (non-native)No Longer Observed  Details
Green Bay Botanical GardenPurple LoosestrifeVerified  Details
NE corner of N County Line Rd and Triangle Dr intersection
Oneida Nation - CTH J near Rolling Meadows RdPurple LoosestrifeVerified  Details
Oneida Nation - HWY 54 Btwn Bay Ridge Ct and N Overland RdPurple LoosestrifeVerified  Details
SE wetland U and Shady DrivePurple LoosestrifeVerified5016781 Details
Southeast corner of Brown Rd and Velp Ave intersectionPurple LoosestrifeVerified  Details
Southeast corner of Brown Rd and Velp Ave intersectionPhragmites (non-native)Verified  Details
West side of Brookside Dr. 1/2 mile north of County Rd U
Buffalo County (1)
Buffalo River- MouthPurple LoosestrifeVerified1813900 Details
Burnett County (22)
Assembly Rd..2 E of N Fork Trade RiverPurple LoosestrifeVerified  Details
Crooked LakeYellow IrisVerified2459100 Details
Devils Lake Yellow IrisVerified2461100 Details
Dueholm FlowageCurly-Leaf PondweedVerified2637200 Details
Dueholm FlowagePurple LoosestrifeVerified2637200 Details
Fish Lake WLA off HWY 87Purple LoosestrifeVerified  Details
Gaslyn Lake Purple LoosestrifeVerified2677700 Details
Lily LakeChinese Mystery SnailVerified2475300 Details
Long Lake Rd./Gehler RdPurple LoosestrifeVerified2674100 Details
No Mans LakeChinese Mystery SnailVerified2486300 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].