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

Lakes and Rivers With Invasives - 2020 Findings

Select Another Location:

Total Locations: 233
Total Lakes and Rivers: 92 *

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.wi.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 8
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
Adams Lake Curly-Leaf PondweedVerified and Vouchered267800Portage Details
Adventure LakeCurly-Leaf PondweedVerified2449100Washburn Details
Archibald LakeZebra MusselVerified417400Oconto 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
Belleville Trail and Badger State Trail at Sugar RiverPoison HemlockVerified Dane 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
Boot LakeBanded Mystery SnailVerified418700Oconto Details
BrittinghamGolden CreeperVerified and Vouchered Dane Details
Bump Road - 0.5 Mile East of S Cincinnati RdPhragmites (non-native)Verified Green Details
Butterfly Dock Superior, WIButterfly dockVerified Douglas Details
Butternut LakeYellow IrisVerified and Vouchered2283300Ashland, Price Details
Cedar CreekRusty CrayfishVerified21300Ozaukee, Washington Details
Cedar Creek - Cedar Creek And Lakefield RoadRusty CrayfishVerified21300Ozaukee Details
Cedar Lake Japanese knotweed (Fallopia japonica)Verified and Vouchered2615100Polk Details
Chicog Lake Japanese knotweed (Fallopia japonica)Verified2692200Washburn Details
Page 1 of 8

* 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].