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

Spiny Naiad

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Total Locations: 32
Total Lakes and Rivers: 32 *

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)Year First FoundDetails
Fond du Lac County (1)
Rush LakeVerified and Vouchered1414002014 Details
Portage County (1)
Lake Helen Verified and Vouchered2872002018 Details
Racine County (3)
Bohner LakeVerified and Vouchered7508002013 Details
Browns LakeVerified and Vouchered7503002015 Details
Long Lake (Lake Kec-Nong-Ga-Mong)Verified and Vouchered7611002018 Details
Rock County (1)
Storrs LakeVerified and Vouchered7803002019 Details
Shawano County (2)
White Clay LakeVerified3264002017 Details
White LakeVerified2408002012 Details
Sheboygan County (3)
Random LakeVerified and Vouchered303002015 Details
Seven mile creekVerified and Vouchered 2015 Details
Unnamed tributaryVerified and Vouchered 2015 Details
Walworth County (4)
Mill LakeVerified and Vouchered7556002012 Details
Pleasant LakeVerified7415002023 Details
Swan LakeVerified7669002022 Details
Turtle LakeVerified and Vouchered7951002014 Details
Washington County (3)
Little Cedar LakeVerified and Vouchered251002015 Details
Lucas LakeVerified and Vouchered359002017 Details
Silver Lake (Paradise Valley)Verified and Vouchered362002018 Details
Waukesha County (9)
Eagle Spring LakeVerified and Vouchered7686002014 Details
Hunter LakeVerified and Vouchered8263002015 Details
Lower NashotaVerified8273002019 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].