- Location
- Manitoba , Ontario , and Saskatchewan in Canada; Minnesota and North Dakota in the U.S.
- Lake type
- proglacial lake
- Etymology
- Louis Agassiz
- Primary inflows
- Laurentide Ice Sheet
- Primary outflows
- Glacial River Warren , the Vermilion River , the Wanapitei River , and the Montreal River valley
- Basin countries
- Canada, United States
- First flooded
- 12,875 years before present
- Max length
- 475 mi (764 km)
- Max width
- 296 mi (476 km)
- Surface area
- 260,000 km (100,000 sq mi)
- Surface elevation
- 335 metres (1,099 ft) 258 metres (846 ft) 325 metres (1,066 ft) 310 metres (1,020 ft)