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

Spiny Waterflea

Select Another Location:

Total Locations: 23
Total Lakes and Rivers: 22 *

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: http://dnr.wi.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)CountyYear First FoundDetails
Butternut LakeVerified692400Forest2014 Details
Escanaba LakeObserved2339900Vilas2012 Details
Fox River () - just above guard lock (Riverside Park)Observed117900Outagamie2016 Details
Fox River at Hwy 441Observed117900Outagamie2017 Details
Gile FlowageVerified2942300Iron2003 Details
Green BayVerified    Details
Ike Walton LakeVerified2321800Vilas2015 Details
Lake KegonsaVerified802600Dane2009 Details
Lake MendotaVerified805400Dane2009 Details
Lake MichiganVerified20 1986 Details
Lake MichiganVerified  1986 Details
Lake MononaVerified804600Dane2009 Details
Lake SuperiorVerified  1987 Details
Lake SuperiorVerified2751220   Details
Lake WaubesaVerified803700Dane2009 Details
Little Sturgeon BayVerified92Door  Details
Rowleys BayVerified20Door  Details
Star LakeVerified1593100Vilas2013 Details
Stormy LakeVerified1020300Vilas2007 Details
Sturgeon BayVerified88Door  Details
Sturgeon Bay CanalVerified96700Door  Details
Trout LakeVerified2331600Vilas2014 Details
Whitefish LakeNo Longer Observed2694000Douglas2006 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].