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

Water Hyacinth

Select Another Location:

Total Locations: 20
Total Lakes and Rivers: 20 *

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
Page 1 of 2
WaterbodyStatusWaterbody ID Code (WBIC)CountyDetails
2019 (2)
East River, Fox RiverVerified118000Brown Details
Southern Tip of Long Point, Green BayVerified20  Details
2018 (3)
Car Street Marsh - Black River Channel Verified and Vouchered727300La Crosse Details
La Plume Slough - Pool 8 Verified and Vouchered727100La Crosse Details
Pettibone Lagoon - Mississippi River Pool 8Verified and Vouchered721000La Crosse Details
2015 (4)
Lake OnalaskaVerified and Vouchered1676700La Crosse Details
Lake WinneconneVerified and Vouchered241600Winnebago Details
Vietnam Veterans Pond - Chad Erickson Memorial ParkVerified1649450La Crosse Details
Wolf River between Lake Winneconne and Lake Butte des MortsVerified241300Winnebago Details
2014 (1)
Arkdale LakeVerified1374300Adams Details
2013 (1)
Jefferson DitchNo Longer Observed Washington Details
2011 (2)
Lizzie Pauls PondNo Longer Observed5021483Buffalo Details
Mississippi River - Pool 5No Longer Observed721000Buffalo Details
2010 (3)
Black Otter LakeNo Longer Observed315600Outagamie Details
Orchid Heights Park,Detention PondsNo Longer Observed Dane Details
Pond (near Whitewater)Verified5578453Walworth Details
2008 (1)
Jacobus Park PondNo Longer Observed9800Milwaukee Details
2005 (1)
Center LakeNo Longer Observed Kenosha Details
2002 (1)
Fifield Wasterwater Treatment PondNo Longer Observed5511618Price Details
Year Not Specified (1)
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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].