United States, Minnesota, Lake of the Woods, Northwest Angle. Along the eastern shore of Flag Island, Lake of the Woods, near the Canadian border 9 miles east-southeast of Angle Inlet, 34 miles northeast of Warroad.
49.32065546 -94.8796642
5464802N 363405E; T167N R33W sec3
323 meters
1060 feet
Occasional to locally frequent in a shallow bay sheltered from storm waves by two small islands. Water depth is 3-4 feet. Firm mud. Full sun.
Associates include Myriophyllum sibiricum, Nymphaea tuberosa, Vallisneria americana, Elodea canadensis.