Contact information
For information on Lakes in Wisconsin, contact:
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: 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)CountyDetails
2023 (5)
Big MuskegoVerified   Details
Gilbert LakeVerified and Vouchered   Details
Pickerel LakeVerified and Vouchered   Details
Pine LakeVerified1012000Waushara Details
Pleasant LakeVerified741500Walworth Details
2022 (3)
Spiny NaiadVerified854300Waukesha Details
Spiny Naiad-Upper NashotahVerified827500Waukesha Details
Swan LakeVerified766900Walworth Details
2021 (1)
Army LakeVerified and Vouchered   Details
2019 (3)
Lower NashotaVerified827300Waukesha Details
Lower NemahbinVerified and Vouchered827000Waukesha Details
Storrs LakeVerified and Vouchered780300Rock Details
2018 (3)
Lake Helen Verified and Vouchered287200Portage Details
Long Lake (Lake Kec-Nong-Ga-Mong)Verified and Vouchered761100Racine Details
Silver Lake (Paradise Valley)Verified and Vouchered36200Washington Details
2017 (2)
Lucas LakeVerified and Vouchered35900Washington Details
White Clay LakeVerified326400Shawano Details
2015 (8)
Browns LakeVerified and Vouchered750300Racine Details
Hunter LakeVerified and Vouchered826300Waukesha Details
Little Cedar LakeVerified and Vouchered25100Washington Details
Moose LakeVerified and Vouchered778400Waukesha Details
Random LakeVerified and Vouchered30300Sheboygan Details
Seven mile creekVerified and Vouchered Sheboygan 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].