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

Eurasian Water-Milfoil

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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
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WaterbodySpeciesStatusWaterbody ID Code (WBIC)Year First FoundDetails
Adams County (30)
Amey Pond Eurasian Water-MilfoilVerified1760002017 Details
Arkdale Lake (Millpond)Eurasian Water-MilfoilVerified and Vouchered13743001994 Details
Arrowhead Lake (Manchester)Eurasian Water-MilfoilVerified and Vouchered13777001992 Details
Big Roche-a-Cri LakeEurasian Water-MilfoilVerified and Vouchered13748002003 Details
Camelot LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered50223872014 Details
Camelot LakeEurasian Water-MilfoilVerified and Vouchered13781001977 Details
Castle Rock Dam to Kilbourn Dam Eurasian Water-MilfoilVerified and Vouchered11799002019 Details
Castle Rock LakeEurasian Water-MilfoilVerified and Vouchered13457001992 Details
Crooked LakeHybrid Eurasian / Northern Water-MilfoilVerified1026002013 Details
Crooked LakeEurasian Water-MilfoilVerified and Vouchered1026002005 Details
Deep LakeHybrid Eurasian / Northern Water-MilfoilVerified1028002008 Details
Deep LakeEurasian Water-MilfoilVerified1028002014 Details
Fawn LakeEurasian Water-MilfoilVerified and Vouchered13013001999 Details
Fawn LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered13013002012 Details
Fenner LakeEurasian Water-MilfoilVerified and Vouchered1034002005 Details
Friendship Lake (Millpond)Eurasian Water-MilfoilVerified and Vouchered13520001992 Details
Goose LakeEurasian Water-MilfoilVerified and Vouchered1036002006 Details
Goose LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered1036001995 Details
Jordan Lake (Long)Eurasian Water-MilfoilVerified and Vouchered1040001992 Details
Jordan Lake (Long)Hybrid Eurasian / Northern Water-MilfoilVerified1040002010 Details
Mason LakeEurasian Water-MilfoilVerified and Vouchered1757001992 Details
Parker LakeHybrid Eurasian / Northern Water-MilfoilVerified1065002010 Details
Parker LakeEurasian Water-MilfoilVerified and Vouchered1065001995 Details
Patrick LakeEurasian Water-MilfoilVerified and Vouchered1066002002 Details
Patrick LakeHybrid Eurasian / Northern Water-MilfoilVerified and Vouchered1066002010 Details
Peppermill LakeHybrid Eurasian / Northern Water-MilfoilVerified1787002014 Details
Peppermill Lake (Beaver Pond)Eurasian Water-MilfoilVerified and Vouchered1787001995 Details
Petenwell LakeEurasian Water-MilfoilVerified and Vouchered13771001992 Details
Sherwood Lake (Deer Lodge)Eurasian Water-MilfoilVerified and Vouchered13779001977 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].