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

Select Another Location:

Total Locations: 10808
Total Lakes and Rivers: 3379 *

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
Page 1 of 363
WaterbodySpeciesStatusWaterbody ID Code (WBIC)CountyDetails
2025 (102)
Alder LakeCurly-Leaf PondweedVerified and Vouchered2329600Vilas Details
Alexander LakeCurly-Leaf PondweedVerified1494600Lincoln Details
Antler CLPCurly-Leaf PondweedVerified2449400Polk Details
Balsam LakeEurasian Water-MilfoilVerified2620600Polk Details
Bass Lake PLPurple LoosestrifeVerified2450500St. Croix Details
Bender ParkJava Waterdrop / Vietnamese Water CeleryVerified5038010Milwaukee Details
Big Green RiverNew Zealand MudsnailVerified   Details
Big Muskellunge LakeBanded Mystery SnailVerified1835300Vilas Details
Big Spring BranchNew Zealand MudsnailVerified   Details
Black Earth Creek Rusty CrayfishVerified   Details
Bohlman Branch (Unnamed 1262300)New Zealand MudsnailVerified   Details
Breakfast LakeEurasian Water-MilfoilVerified2454800Bayfield Details
Camelia BMSBanded Mystery SnailVerified5006622Polk Details
Cannonball PathLesser celandine (Ranunculus ficaria)Verified   Details
Chelsea CMSChinese Mystery SnailVerified2200400Taylor Details
Chinese Mystery SnailChinese Mystery SnailVerified2185700Chippewa Details
Clear Lake YIYellow IrisVerified1763900Taylor Details
Coon Fork Flowage Curly-Leaf PondweedVerified2135600Eau Claire Details
Crystal LakeEurasian Water-MilfoilVerified834300Dodge Details
Crystal LakeCurly-Leaf PondweedVerified834300Dodge Details
Decorah Lake - East ShorelineYellow IrisVerified   Details
Dells PondEurasian Water-MilfoilVerified2149900Eau Claire Details
Dells Pond CMSChinese Mystery SnailVerified2149900Eau Claire Details
DeNeveu LakeEurasian Water-MilfoilVerified139300Fond du Lac Details
East Bridge Street - 0.25 M North of I-90/94Phragmites (non-native)Verified   Details
Elk Creek Lake YIYellow IrisVerified2121000Dunn, Eau Claire Details
Esadore YIYellow IrisVerified1764000Taylor Details
Fox River (Waterford Waterway, Tichigan impoundment)Starry StonewortVerified and Vouchered5591525  Details
Glisezinski YIYellow IrisVerified987100Portage 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].