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

Eurasian Water-Milfoil

Select Another Location:

Total Locations: 1078
Total Lakes and Rivers: 932 *

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
Page 1 of 38
WaterbodySpeciesStatusWaterbody ID Code (WBIC)CountyDetails
2023 (14)
Amy Belle LakeEurasian Water-MilfoilVerified   Details
Bass Lake (Rhinelander) Eurasian Water-MilfoilVerified and Vouchered1580300Oneida Details
Elkhorn Lake Eurasian Water-MilfoilVerified   Details
Jackson CreekEurasian Water-MilfoilVerified   Details
Jackson Lake Eurasian Water-MilfoilVerified   Details
La Grange Lake - EWMEurasian Water-MilfoilVerified818700Walworth Details
Lake Five Hybrid Eurasian / Northern Water-MilfoilVerified   Details
Madeline Lake Eurasian Water-MilfoilVerified and Vouchered1544700Oneida Details
Manitowish Lake Eurasian Water-MilfoilVerified and Vouchered2329500Vilas Details
Rainbow Spring LakeHybrid Eurasian / Northern Water-MilfoilVerified768000Waukesha Details
Stone LakeEurasian Water-MilfoilVerified and Vouchered1884100Washburn Details
Trump LakeEurasian Water-MilfoilVerified   Details
Turtle Flambeau Flowage - Murrays Landing Eurasian Water-MilfoilVerified and Vouchered2294900Iron Details
Waubee LakeEurasian Water-MilfoilVerified   Details
2022 (12)
Arbutus LakeHybrid Eurasian / Northern Water-MilfoilVerified181400Forest Details
Big Sissabagama Lake Eurasian Water-MilfoilVerified and Vouchered2393500Sawyer Details
Cedar LakeHybrid Eurasian / Northern Water-MilfoilVerified45100Manitowoc Details
Des PlainesEurasian Water-MilfoilVerified and Vouchered734000Kenosha Details
Lucas LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered35900Washington Details
Musser Lake Eurasian Water-MilfoilVerified and Vouchered2245100Price Details
Pearl LakeHybrid Eurasian / Northern Water-MilfoilVerified195400Waushara Details
Round Lake Hybrid Eurasian / Northern Water-MilfoilVerified and Vouchered2395600Sawyer Details
St. Croix River - Close SloughEurasian Water-MilfoilVerified2633400Polk Details
Wilson Park PondEurasian Water-MilfoilVerified15500Milwaukee Details
Wingra Creek at Gardner MarshEurasian Water-MilfoilVerified804700Dane Details
Wisconsin River - Vilas County Eurasian Water-MilfoilVerified and Vouchered1179900Vilas Details
2021 (14)
Arbutus LakeEurasian Water-MilfoilVerified181400Forest 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].