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

Eurasian Water-Milfoil

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Total Locations: 23
Total Lakes and Rivers: 22 *

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 Waterbody | By Species | By Year | Open In Excel
Page 1 of 2
WaterbodySpeciesStatusWaterbody ID Code (WBIC)Details
2022 (2)
Big Sissabagama Lake Eurasian Water-MilfoilVerified and Vouchered2393500 Details
Round Lake Hybrid Eurasian / Northern Water-MilfoilVerified and Vouchered2395600 Details
2021 (1)
Barber LakeEurasian Water-MilfoilVerified2382300 Details
2017 (1)
Lac Coute OreillesEurasian Water-MilfoilVerified and Vouchered2390800 Details
2015 (1)
Little Lac Courte OreillesEurasian Water-MilfoilVerified and Vouchered2390500 Details
2014 (1)
Lost Land LakeHybrid Eurasian / Northern Water-MilfoilVerified2418600 Details
2013 (2)
Lost Land LakeEurasian Water-MilfoilVerified and Vouchered2418600 Details
Tiger Cat FlowageEurasian Water-MilfoilNo Longer Observed2435000 Details
2012 (1)
HaywardHybrid Eurasian / Northern Water-MilfoilVerified2725500 Details
2011 (1)
Hayward LakeEurasian Water-MilfoilVerified2725500 Details
2008 (1)
Whitefish LakeEurasian Water-MilfoilVerified and Vouchered2392000 Details
2006 (2)
Chippewa Lake (above CTH B)Eurasian Water-MilfoilVerified2414500 Details
North Fork Chief River (From Chippewa Fl. to Callahan Lake)Eurasian Water-MilfoilVerified and Vouchered2434000 Details
2005 (4)
Callahan LakeEurasian Water-MilfoilVerified and Vouchered2434700 Details
Mud LakeEurasian Water-MilfoilVerified and Vouchered2382200 Details
Mud LakeEurasian Water-MilfoilVerified and Vouchered2434800 Details
Osprey LakeEurasian Water-MilfoilVerified and Vouchered2395100 Details
2003 (1)
Radisson FlowageEurasian Water-MilfoilVerified and Vouchered2397400 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].