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

Spiny Waterflea

Select Another Location:

Total Locations: 23
Total Lakes and Rivers: 27 *

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
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WaterbodyStatusWaterbody ID Code (WBIC)Year First FoundDetails
Calumet County (1)
Lake WinnebagoVerified1311002022 Details
Dane County (4)
Lake KegonsaVerified8026002009 Details
Lake MendotaVerified8054002009 Details
Lake MononaVerified8046002009 Details
Lake WaubesaVerified8037002009 Details
Door County (4)
Little Sturgeon BayVerified92  Details
Rowleys BayVerified20  Details
Sturgeon BayVerified88  Details
Sturgeon Bay CanalVerified96700  Details
Douglas County (1)
Whitefish LakeNo Longer Observed26940002006 Details
Fond du Lac County (1)
Lake WinnebagoVerified1311002022 Details
Forest County (1)
Butternut LakeVerified6924002014 Details
Iron County (2)
Gile FlowageVerified29423002003 Details
West Branch Montreal RiverVerified29421002018 Details
Outagamie County (2)
Fox River (Riverside Park)Verified1179002016 Details
Fox River at Sunset Point ParkVerified1179002017 Details
Vilas County (5)
Ike Walton LakeVerified23218002015 Details
Plum lakeVerified15924002019 Details
Star LakeVerified15931002013 Details
Stormy LakeVerified10203002007 Details
Trout LakeVerified23316002014 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].