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

Phragmites (non-native)

Select Another Location:

Total Locations: 3050
Total Lakes and Rivers: 188 *

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 103
WaterbodyStatusWaterbody ID Code (WBIC)CountyDetails
2025 (1)
Otter Creek Drainage DitchVerified   Details
2024 (15)
220th street PhragVerified2449200Polk Details
Delmonte DriveVerified Racine Details
HWY 54 Seymour Dentist wetlandVerified Outagamie Details
HWY 93 and TrowBridge Ln NN-PhragVerified Trempealeau Details
Lake Nancy PhragmitesVerified and Vouchered2691500Washburn Details
Lake TahoeVerified752000Racine Details
Little Menomonee River - Calumet RdVerified17600Milwaukee Details
Manure Lagoon PhragVerified Polk Details
Maple Ridge Rd PhragVerified Marathon Details
NN - Phrag Walmart Rib MountainVerified Marathon Details
Noyes PondVerified11100Milwaukee Details
Private residence Woodland courtVerified Washington Details
Tamarack Creek PhragVerified Trempealeau Details
Vern Wolf LakeVerified739100Kenosha Details
Wilber Rd PhragVerified Trempealeau Details
2023 (8)
0.1 Mile E of Quill Lake. Along Tree Farm RoadVerified490100Oconto Details
Barkhousen Interpretive CenterVerified Brown Details
Bradley LakeVerified100000Door Details
Heidmann LakeVerified85200Kewaunee Details
HWY 54 Gas StationVerified Wood Details
Kewaunee RiverVerified Kewaunee Details
Sand Lake PhragmitesVerified and Vouchered2495000Polk Details
Unnamed WBIC 5526403Verified   Details
2022 (10)
2526 Serene Ct De Pere, WI 54115Verified Brown Details
765th Street PhragVerified Dunn Details
Page 1 of 103

* 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].