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

Hairy Willow Herb

Select Another Location:

Total Locations: 14
Total Lakes and Rivers: 5 *

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)Year First FoundDetails
Manitowoc County (1)
Paddlers Park Boat LaunchVerified and Vouchered840002016 Details
Ozaukee County (1)
Virmond ParkVerified 2021 Details
Racine County (2)
Carre-Hogle Park (station #10034179)Verified 2019 Details
Station #10047400 (Wetland ID52423694586)Verified19002019 Details
Sheboygan County (5)
County Rd Z (Station 10049101)
Maywood Environmental ParkVerified and Vouchered 2017 Details
Sheboygan River (Station ID#10034323) Wildwood IslandVerified507002016 Details
Sheboygan River Kiwanis Park(station#10017530)Verified507002018 Details
Sheboygan River, North 8th Street LandingVerified and Vouchered507002016 Details
Waukesha County (3)
Calhoun Rd, Wetland (Station #10051129)Verified 2018 Details
Kettle Moraine Sceneic Dr - N. of Eagle Verified 2014 Details
Milky Way Rd (Station #10053193)Verified 2015 Details
County Not Specified (2)
SWNW3648N05W - Bayfield COVerified27512202012 Details
Whittlesey Crk Source SandbarsVerified27512202012 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].