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

Lakes and Rivers With Invasives

Select Another Location:

Total Locations: 452
Total Lakes and Rivers: 217 *

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: https://dnr.wisconsin.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 16
WaterbodyStatusWaterbody ID Code (WBIC)Year First FoundDetails
Banded Mystery Snail (67)
Adams LakeVerified9671002005 Details
Alder LakeVerified and Vouchered23296002013 Details
Allequash LakeVerified23324002015 Details
Anvil LakeVerified9688002006 Details
Ballard LakeVerified23407002010 Details
Big Arbor VitaeVerified15456002005 Details
Big LakeVerified23347002010 Details
Big LakeVerified29638002011 Details
Big Muskellunge LakeVerified18353002025 Details
Big Portage LakeVerified16295002018 Details
Big St. GermainVerified15911002005 Details
Brandy LakeVerified15413002016 Details
Carrol LakeVerified and Vouchered15448002005 Details
Clear LakeVerified and Vouchered23290002005 Details
Content LakeVerified and Vouchered15920002005 Details
Duck LakeVerified15999002006 Details
Eagle LakeVerified16002002012 Details
Fawn LakeVerified23289002005 Details
Fence LakeVerified23230002010 Details
Fishtrap LakeVerified23432002006 Details
Forest LakeVerified27622002005 Details
Found LakeVerified15938002005 Details
High LakeVerified23440002005 Details
Island LakeVerified and Vouchered23344002006 Details
Johnson LakeVerified15411002006 Details
Johnson LakeVerified23428002006 Details
Kentuck LakeVerified7168002006 Details
Lac Vieux DesertVerified16319002004 Details
Lake LauraVerified and Vouchered9952002006 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].