Giant Floater are a fast-growing and  relatively short-lived species.

Key Characteristics

Conservation Status


Found in shallow streams, lakes, and pools with fine sediment, along with areas dominated by sand and gravel with little to no flowing water.

Host Species

Freshwater drum, green sunfish, yellow perch, centrarchids.

More Information


In Vermont, the giant floater is found in Lake Champlain and at least the following tributary streams: Missisquoi River, Lamoille River, Otter Creek, East Creek, Hubbardton River, Poultney River, and Winooski River. It is a species of the Interior Basin of North America reaching its northeastern range limit in the Lake Champlain drainage. This species appears to be most abundant in the Missisquoi River and littoral areas of Lake Champlain.

Distribution map has locations where this species has been documented and digitized into the atlas database. Systematic surveys have not been conducted for many species and those surveys that have been conducted have been largely focused on endangered species. Therefore, in some cases, the actual distribution of freshwater mussels may be more extensive than what is presented here. Shaded areas are watershed sub-basins and river main stems are shown.