Pennsylvania Fish and Boat Commission.

See also: Aquatic Invasive Species for more control plans

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

Provides state, county, point and GIS data. Maps can be downloaded and shared.

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

DOI. USGS. Wetland and Aquatic Research Center.

Provides detailed collection information as well as animated map.

USDA. NRCS. National Plant Data Center.

University of California. Weed Research and Information Center.

See also: Weeds in Natural Areas for more information sheets