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 - 2020 Findings

Select Another Location:

Total Locations: 246
Total Lakes and Rivers: 106 *

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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WaterbodySpeciesStatusWaterbody ID Code (WBIC)CountyDetails
HWY 87 .3 mi N of 285th AvePurple LoosestrifeVerified Polk Details
0.1 M North of Spring Valley Road and Turkey RoadPurple LoosestrifeVerified Dane Details
0.5 M East of Spring Valley Road and Turkey RoadPurple LoosestrifeVerified Dane Details
233rd ave and 55th streetPurple LoosestrifeVerified Polk Details
270th ave 1/4 mile E of 228 StPurple LoosestrifeVerified Polk Details
270th ave 1/4 mile east 228 streetPurple LoosestrifeVerified Polk Details
270th ave 1/4 mile east of 87Purple LoosestrifeVerified Polk Details
270th ave and 220th streetPurple LoosestrifeVerified Polk Details
Across from Super 8 on Hwy 2Purple LoosestrifeVerified Ashland Details
Adams Lake Curly-Leaf PondweedVerified and Vouchered267800Portage Details
Adventure LakeCurly-Leaf PondweedVerified2449100Washburn Details
Amnicon River Purple LoosestrifeVerified and Vouchered2848900Douglas Details
Archibald LakeZebra MusselVerified417400Oconto Details
Armour Lake Yellow IrisVerified and Vouchered2953200Vilas Details
Ashippun LakeChinese Mystery SnailVerified854300Waukesha Details
Ashland - Hot Pond Eurasian Water-MilfoilVerified2751220  Details
Ashland Marina - Chequamegon Bay Eurasian Water-MilfoilVerified2751220  Details
Balsam Branch Chinese Mystery SnailVerified Polk Details
Balsam Branch - 105th AvenuePurple LoosestrifeVerified Polk Details
Bark Bay Slough Queen of the meadow (Filipendula ulmaria)Verified and Vouchered2881000Bayfield Details
Bass Lake Purple LoosestrifeVerified   Details
Belleville Trail and Badger State Trail at Sugar RiverPoison HemlockVerified Dane Details
Big Arbor Vitae Lake Purple LoosestrifeVerified1545600Vilas Details
Big Green River - 150 M Downstream of County Road KGolden CreeperVerified1203900Grant Details
Big Green River - 600 M Downstream of WI-133Golden CreeperVerified1203900Grant Details
Big Trade LakePurple LoosestrifeVerified2638700Burnett Details
Bloody Red Shrimp Allouez BayBloody ShrimpVerified2751220  Details
Blue LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered1538600Oneida Details
BrittinghamGolden CreeperVerified and Vouchered Dane Details
Bump Road - 0.5 Mile East of S Cincinnati RdPhragmites (non-native)Verified Green 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].