Contact information
For information on Lakes in Wisconsin, contact:
DNR Lake
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: 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
Water Hyacinth (20)
Arkdale LakeVerified1374300Adams2014 Details
Black Otter LakeNo Longer Observed315600Outagamie2010 Details
Car Street Marsh - Black River Channel Verified and Vouchered727300La Crosse2018 Details
Center LakeNo Longer Observed Kenosha2005 Details
East River, Fox RiverVerified118000Brown2019 Details
Fifield Wasterwater Treatment PondNo Longer Observed5511618Price2002 Details
Jacobus Park PondNo Longer Observed9800Milwaukee2008 Details
Jefferson DitchNo Longer Observed Washington2013 Details
La Plume Slough - Pool 8 Verified and Vouchered727100La Crosse2018 Details
Lake OnalaskaVerified and Vouchered1676700La Crosse2015 Details
Lake WinneconneNo Longer Observed241600Winnebago2015 Details
Lizzie Pauls PondNo Longer Observed5021483Buffalo2011 Details
Mississippi River - Pool 5No Longer Observed721000Buffalo2011 Details
Orchid Heights Park,Detention PondsNo Longer Observed Dane2010 Details
Pettibone Lagoon - Mississippi River Pool 8Verified and Vouchered721000La Crosse2018 Details
Pond (near Whitewater)Verified5578453Walworth2010 Details
Pond in Orchid Heights Park in MiddletonNo Longer Observed Dane  Details
Southern Tip of Long Point, Green BayVerified20 2019 Details
Vietnam Veterans Pond - Chad Erickson Memorial ParkVerified1649450La Crosse2015 Details
Wolf River between Lake Winneconne and Lake Butte des MortsVerified241300Winnebago2015 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].