Reported from the upper half of the Mississippi River basin, the Great Lakes and Hudson Bay basins, and a probable reproducing population from an Ohio River tributary in Kentucky (Ref. 10294). Specifically, Hudson Bay Basin, Minnesota; Lake Superior Basin, Michigan, and Wisconsin; Lake Michigan Basin, Illinois, Michigan (Carp Lake River), and Wisconsin; Lake Huron Basin, Michigan (Devils, East Au Gres, Pine, and Rifle rivers); Detroit and St. Clair rivers, Michigan; Lake Erie Basin, Michigan, New York, and Ohio (Swan

Creek); Lake Ontario Basin, New York; St. Lawrence River Basin, New York, and Vermont; Ohio River Basin, Kentucky, Illinois, Indiana, Ohio, Pennsylvania, and West Virginia; Missouri River Basin, Missouri, Nebraska, and South Dakota; Upper Mississippi River Basin, Illinois, Iowa, Minnesota, Missouri, and Wisconsin; Tennessee-Cumberland River Basin, Tennessee; Lower Mississippi River Basin, Mississippi (Ref. 89241). Also Ref. 86798.

Status of threat: Endangered, and is treated as a Species of Special Concern in Tennessee (Ref. 10294).