Specimen Information

Trapa natans
Trapa natans
(water chestnut)

Specimen ID1695824
Common Namewater chestnut
CountySt. Lawrence
LocalityOswegatchie River in the village of Heuvelton
Mapping AccuracyAccurate
HUC8 NameOswegatchie
HUC8 Number04290003
HUC10 NameLisbon Creek-Oswegatchie River
HUC10 Number0429000310
HUC12 NameVillage of Heuvelton-Oswegatchie River
HUC12 Number042900031002
Collection Year2021
Year AccuracyActual
Potential Pathwayhitch hiker
Reference 1
Ref. Number:38113
Author:Curatolo, M.
Title:Volunteers to remove invasive water chestnut on Oswegatchie River
Publisher:Northern New York 360
CommentsLast year, 13 volunteers pulled weeds by hand below the Heuvelton dam. This year, more than 100 volunteers are expected to take part in a massive operation on June 25 to remove several hundred acres of water chestnuts infesting waters above the dam as well as more below the dam. Mechanical removal includes multiple weed harvesters.
Record TypeLiterature
VerifierIan Pfingsten
Specimen ImpactIt has found a home above and below the village of Heuvelton’s dam on the Oswegatchie River, infesting hundreds of acres of bay and river — choking it out from sunlight, killing fish and other vegetation and making the river impassable by watercraft, even kayaks.


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Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/22/2024].

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