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)CountyYear First FoundDetails
Spiny Naiad (32)
Army LakeVerified and Vouchered  2021 Details
Big MuskegoVerified  2023 Details
Bohner LakeVerified and Vouchered750800Racine2013 Details
Browns LakeVerified and Vouchered750300Racine2015 Details
Eagle Spring LakeVerified and Vouchered768600Waukesha2014 Details
Gilbert LakeVerified and Vouchered  2023 Details
Hunter LakeVerified and Vouchered826300Waukesha2015 Details
Lake Helen Verified and Vouchered287200Portage2018 Details
Little Cedar LakeVerified and Vouchered25100Washington2015 Details
Long Lake (Lake Kec-Nong-Ga-Mong)Verified and Vouchered761100Racine2018 Details
Lower NashotaVerified827300Waukesha2019 Details
Lower NemahbinVerified and Vouchered827000Waukesha2019 Details
Lucas LakeVerified and Vouchered35900Washington2017 Details
Mill LakeVerified and Vouchered755600Walworth2012 Details
Moose LakeVerified and Vouchered778400Waukesha2015 Details
Ottawa LakeVerified and Vouchered822200Waukesha2014 Details
Pickerel LakeVerified and Vouchered  2023 Details
Pine LakeVerified1012000Waushara2023 Details
Pleasant LakeVerified741500Walworth2023 Details
Random LakeVerified and Vouchered30300Sheboygan2015 Details
Rush LakeVerified and Vouchered141400Fond du Lac, Winnebago2014 Details
Seven mile creekVerified and Vouchered Sheboygan2015 Details
Silver LakeVerified and Vouchered779800Waukesha2015 Details
Silver Lake (Paradise Valley)Verified and Vouchered36200Washington2018 Details
Spiny NaiadVerified854300Waukesha2022 Details
Spiny Naiad-Upper NashotahVerified827500Waukesha2022 Details
Storrs LakeVerified and Vouchered780300Rock2019 Details
Swan LakeVerified766900Walworth2022 Details
Turtle LakeVerified and Vouchered795100Walworth2014 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].