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Home / Aquatic Invasives / Aquatic Plants / Water Chestnut

Water Chestnut

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Water chestnut
Water chestnut, flowers - Photo by Leslie J. Mehrhoff; University of Connecticut
Scientific Name: 

Trapa natans L. (ITIS)

Common Name: 

Water chestnut, water nut, water caltrop

Native To: 

Eurasia and Africa (Hummel and Kiviat 2004)

Date of U.S. Introduction: 
Means of Introduction: 
Impact: 

Forms dense mats that displace native species and interfere with recreational activities (Hummel and Kiviat 2004)

Distribution / Maps / Survey Status

University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
DOI. USGS. Wetland and Aquatic Research Center.
Provides detailed collection information as well as animated map.

Images

University of Georgia. Center for Invasive Species and Ecosystem Health.

Videos

Google. YouTube; Stony Brook-Millstone Watershed Association Education (Central New Jersey).

Google. YouTube; Riverbank Media.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Water Chestnut.

Council or Task Force

Alberta Invasive Species Council (Canada).

See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act

Partnership
IUCN. Species Survival Commission. Invasive Species Specialist Group.

Ontario's Invading Species Awareness Program (Canada).

University of Georgia. Center for Invasive Species and Ecosystem Health.
Northeast Aquatic Nuisance Species Panel.

New York Invasive Species Clearinghouse.

Federal Government

Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.

DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).
USDA. NRCS. National Plant Data Center.

USDA. ARS. National Genetic Resources Program. GRIN-Global.

International Government
New South Wales Department of Primary Industries (Australia).

Ontario Ministry of Natural Resources (Canada).

See also: Invasive Species Fact Sheets for more resources
State and Local Government

Pennsylvania Fish and Boat Commission.

See also: Aquatic Invasive Species for more action plans

New Hampshire Department of Environmental Services.

See also: Publications - Invasive for more resources

Rhode Island Department of Environmental Management. Office of Water Resources.

See also: Aquatic Invasive Plants for species of concern

New York Department of Environmental Conservation.

Maryland Department of Natural Resources.

Pennsylvania Department of Conservation and Natural Resources.

See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands

Wisconsin Department of Natural Resources.

Academic

Pennsylvania State University. Pennsylvania Sea Grant.

See also: Aquatic Invasive Species: Resources for additional species information

University of California. Weed Research and Information Center.
See also: Weeds in Natural Areas for more information sheets
Columbia University. Center for Environmental Research and Conservation.
University of Maine. Cooperative Extension.
See also: Maine Invasive Plants & Entire Series for entire series of 22 fact sheets and invasive plants brochure (available in HTML/PDF or for purchase)
Professional
Lake Stewards of Maine.
Special Note: Formerly known as the Maine Volunteer Lake Monitoring Program.

Citations