Rainy Lake

lake in Ontario, Canada and Minnesota, United States

Rainy Lake (French: Lac de la pluie) is a lake on the border of the United States and Canada. The lake is about 49 miles (79 km) long and 20 miles (32 km) wide, covering about 345 square miles (894 square kilometers). The Rainy River flows from the west side of the lake, and is a source of hydroelectric power for the city of International Falls. Other than electric power generation, Rainy Lake's waters are also a popular boating and fishing spot.

Rainy Lake
Rainy Lake.JPG
LocationMinnesota, USA / Ontario, Canada
Coordinates48°38′13″N 93°01′53″W / 48.63694°N 93.03139°W / 48.63694; -93.03139Coordinates: 48°38′13″N 93°01′53″W / 48.63694°N 93.03139°W / 48.63694; -93.03139
Typeremnant of former glacial Lake Agassiz
Primary inflowsNamakan Lake
Kabetogama Lake
Seine River
Primary outflowsRainy River
Basin countriesCanada, United States
Max. length80 km (50 mi)
Max. width48 km (30 mi)
Surface area932 km2 (360 sq mi)
Max. depth50 m (160 ft)
highly variable
Shore length11,500 km (930 mi)
2,520 km (1,570 mi) (w/ Islands)
highly irregular, rocky shoreline
Surface elevation338 m (1,109 ft)
SettlementsInternational Falls, MN
Fort Frances, Ontario
1 Shore length is not a well-defined measure.


  1. Rahm, Joe. Island Images: Rainy Lake’s missing islands. The Journal. 14 Feb. 2010.