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

Purple Loosestrife

Select Another Location:

Total Locations: 1059
Total Lakes and Rivers: 596 *

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
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WaterbodyStatusWaterbody ID Code (WBIC)CountyYear First FoundDetails
Chippewa River and Silver Birch LakeVerified Pepin  Details
HWY 35 south of HWY 48Verified Polk2010 Details
HWY 87 .3 mi N of 285th AveVerified Polk2020 Details
Island near 1st Bank of BaldwinVerified Polk2022 Details
North Two Lake - LandingVerified1007500Oneida2016 Details
Willow River at 250th StVerified St. Croix2015 Details
0.1 M North of Spring Valley Road and Turkey RoadVerified Dane2020 Details
0.5 M East of Spring Valley Road and Turkey RoadVerified Dane2020 Details
140m S of Anderson Ln W of Hwy NVerified902700Lafayette2018 Details
140th AveVerified Polk2021 Details
15 Meters Upstream Hwy B- Station #2Verified Douglas2021 Details
163rd St., S. of Theriault Rd Verified Chippewa2018 Details
190th street just north of Swede lake RDVerified Polk2021 Details
200th St. and 221st AveVerified St. Croix2019 Details
230th St 1/3 mi S of 280th AveVerified Polk2018 Details
230th StreetVerified and Vouchered Polk2018 Details
233rd ave and 55th streetVerified Polk2020 Details
270th ave 1/4 mile E of 228 StVerified Polk2020 Details
270th ave 1/4 mile east 228 streetVerified Polk2020 Details
270th ave 1/4 mile east of 87Verified Polk2020 Details
270th ave and 220th streetVerified Polk2020 Details
400 Bike Trail near Unnamed 5564325Verified Juneau2022 Details
560 E Applewood EdgertonVerified5038982Rock2019 Details
710th Ave and 910th StVerified Pierce2022 Details
Across from Super 8 on Hwy 2Verified Ashland2020 Details
Ahnapee RiverVerified    Details
Alexander LakeVerified1494600Lincoln2021 Details
Alexander Lake/ WI RIver - HartwigVerified1179900Lincoln2022 Details
Alford Dr Park and Ride S of CarthageVerified Kenosha2023 Details
Allequash LakeVerified2332400Vilas2014 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].