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: 25
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
WaterbodyStatusWaterbody ID Code (WBIC)Year First FoundDetails
Eurasian Water-Milfoil (25)
Bullhead LakeVerified and Vouchered683002005 Details
Carstens Lake (Carsten)Verified and Vouchered668001993 Details
Cedar LakeVerified and Vouchered451001993 Details
English LakeVerified and Vouchered681002009 Details
Harpt Lake (Herman)Verified and Vouchered846001994 Details
Hartlaub LakeVerified672002009 Details
Horseshoe LakeVerified and Vouchered642001971 Details
Kiel MillpondVerified55601132014 Details
Lake MichiganVerified and Vouchered201978 Details
Little Pigeon LakeVerified and Vouchered638002009 Details
Long LakeVerified and Vouchered775002003 Details
Pigeon LakeVerified and Vouchered640001994 Details
Point CreekVerified 2017 Details
Rockville FlowageVerified and Vouchered584001994 Details
Sheboygan RiverVerified507001978 Details
Shoe LakeVerified and Vouchered467002012 Details
Silver LakeVerified and Vouchered674002008 Details
Spring LakeVerified637002012 Details
Tuma Lake (Ording)Verified and Vouchered879001993 Details
Wilke LakeVerified and Vouchered580001993 Details
Hybrid Eurasian / Northern Water-Milfoil (5)
Carstens LakeVerified668002012 Details
EnglishVerified681002011 Details
Hartlaub LakeVerified672002011 Details
Shoe LakeVerified467002012 Details
Silver LakeVerified and Vouchered674002010 Details

* 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].