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

Chinese Mystery Snail

Select Another Location:

Total Locations: 867
Total Lakes and Rivers: 908 *

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 30
WaterbodyStatusWaterbody ID Code (WBIC)CountyDetails
2023 (10)
Big Portage Lake Verified and Vouchered   Details
Butternut Creek @ CTY NVerified5518714Polk Details
Butternut LakeVerified   Details
Chain Lake CMSVerified   Details
Lake MohawksinVerified and Vouchered1515400Lincoln Details
Lake Montanis CMSVerified   Details
Lake Noquebay Upper InletVerified   Details
Little Butternut Lake CMSVerified   Details
McCann Lake CMSVerified   Details
Oconomowoc River between Oconomowoc and Fowler LakesVerified848200Waukesha Details
2022 (12)
Bass Lake Verified2451200Burnett Details
Blue Lake Verified and Vouchered1538600Oneida Details
Booth LakeVerified740400Walworth Details
Camp LakeVerified747100Kenosha Details
Fox LakeVerified835800Dodge Details
Menomonee ParkVerified Waukesha Details
O'Brien LakeVerified2928400Iron Details
Pumpkinseed CreekVerified and Vouchered243300Waushara, Winnebago Details
Warner Park LagoonVerified5034956Dane Details
Wilson Park PondVerified15500Milwaukee Details
Wingra Creek at Gardner MarshVerified804700Dane Details
Yahara River - Viking Park Canoe LaunchVerified Dane Details
2021 (10)
Army LakeVerified   Details
Black Otter LakeVerified315600Outagamie Details
Hooker LakeVerified738400Kenosha Details
Lily LakeVerified2475300Burnett Details
Milwaukee River CMSVerified15000Milwaukee, Ozaukee Details
Page 1 of 30

* 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].