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

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Total Locations: 15
Total Lakes and Rivers: 38 *

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 County | By Waterbody | By Species | By Year | Open In Excel
WaterbodyStatusWaterbody ID Code (WBIC)CountyYear First FoundDetails
Center LakeNo Longer Observed Kenosha2005 Details
Duck CreekNo Longer Observed5549136Brown, Outagamie2002 Details
Jacobus Park PondNo Longer Observed9800Milwaukee2008 Details
Jefferson DitchNo Longer Observed5034083Washington2011 Details
Lake MendotaVerified and Vouchered805400Dane2015 Details
Lake OnalaskaVerified1676700La Crosse2015 Details
Lizzie Pauls PondNo Longer Observed5021483Buffalo2011 Details
Mississippi River - Pool 5No Longer Observed721000Buffalo2011 Details
O'Neil Creek No Longer Observed5590939Chippewa2005 Details
Orchid Heights Park, Detention PondsNo Longer Observed Dane2010 Details
Private Pond - WaterlooVerified and Vouchered Jefferson2021 Details
Private Pond - Wynona DriveNo Longer Observed Milwaukee2020 Details
Springville PondNo Longer Observed1402300Portage2009 Details
Unnamed Pond/Channel in Lakeside Park - Near Lake WinnebagoNo Longer Observed5562445Fond du Lac2010 Details
Vietnam Veterans Pond - Chad Erickson Memorial ParkVerified1649450La Crosse2015 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].