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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

Select Another Location:

Total Locations: 77
Total Lakes and Rivers: 37 *

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: http://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 Waterbody | By Species | By Year | Open In Excel
Page 1 of 4
WaterbodyStatusWaterbody ID Code (WBIC)Year First FoundDetails
Asiatic Clam (Corbicula) (1)
St Louis River EstuaryVerified55003501999 Details
Banded Mystery Snail (3)
Lower Eau Claire LakeVerified and Vouchered27416002014 Details
St. Croix FlowageVerified27403002013 Details
Upper Saint Croix LakeVerified and Vouchered27473002005 Details
Chinese Mystery Snail (9)
Crystal LakeVerified24597002015 Details
Manmade PondVerified 2012 Details
Minong FlowageVerified26929002013 Details
Nebagamon LakeVerified28650002011 Details
Person LakeVerified24886002012 Details
Sauntrys Pocket LakeVerified24956002012 Details
St. Croix FlowageVerified27403002005 Details
Upper St Croix LakeVerified and Vouchered27473002010 Details
Whitefish LakeVerified26940002019 Details
Curly-Leaf Pondweed (7)
Amnicon LakeVerified and Vouchered28581002007 Details
Dowling LakeVerified28583002010 Details
Lake MinnesuingVerified and Vouchered28662002018 Details
Minong Flowage (L Nancy)Verified26929001994 Details
Saint Croix Flowage (Gordon)Verified and Vouchered27403002005 Details
Saint Louis RiverVerified2843800  Details
Upper St Croix LakeVerified27473002010 Details
Eurasian Water-Milfoil (6)
Cranberry LakeVerified and Vouchered26931002006 Details
Hog Island InletVerified27512202016 Details
Minong FlowageVerified and Vouchered26929002002 Details
Red LakeVerified and Vouchered24921002016 Details
St. Croix (Gordon) FlowageVerified and Vouchered27403002007 Details
Page 1 of 4

* 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].