The Pocketbook is found in the Interior Basin of North America reaching its northeastern range limit in the St. Lawrence River and Lake Champlain.

Key Characteristics

Conservation Status


Found in larger rivers with loose to firmly-packed sand, gravel-sand, or silty sand substrates.

Host Species

Centrarchids; white crappie, bluegill, green sunfish, largemouth bass, smallmouth bass, banded killifish, walleye.

More information


Found only in the Lake Champlain basin in tributaries upstream to fall-lines. Apparently not common except in the Poultney River. Other tributaries include: Missisquoi River, Lamoille River, Lewis Creek, and Otter Creek. It has been found in the littoral zone in Lake Champlain in Colchester.

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.