Largest lakes & reservoirs in Ontario by water volume
This is a comparison for lakes within Canada > Ontario > - Compared by Largest Lakes - Water Volume in acre-foot.For some lakes, "Largest Lakes - Water Volume" is unknown or does not apply, so this table may display fewer lakes than the total 55 articles we have published for Ontario lakes.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
Search results: Sort lakes by water volume
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Lake Superior (Canada, Great Lakes, Lake Superior Northwoods Region, Michigan, Midwest, Minnesota, Northeast, Ontario, USA, Upper Peninsula, Wisconsin) |
9,799,680,000 ac-ft | Skipping over state and country borders, Lake Superior, the largest, deepest, coldest, cleanest, least developed, and most pristine of the Great Lakes… |
| Lake Michigan-Huron (Canada, Chicagoland, Great Lakes, Illinois, Indiana, Lake Michigan Region, Michigan, Midwest, North, Northeast, Northwest, Ontario, Southwest, USA, Upper Peninsula, West Central, Wisconsin) |
6,858,776,000 ac-ft | Lake Michigan and Lake Huron – two of North America’s Great Lakes – are contiguous and they share the same elevation of 577 feet above sea level. They… |
| Lake Huron (Canada, East Central, Great Lakes, Michigan, Midwest, Northeast, Ontario, USA, Upper Peninsula) |
2,872,320,000 ac-ft | A glacial lake of epic proportions, Lake Huron is the second largest of the five Great Lakes by surface area, boasting 23,010 square miles and an incr… |
| Lake Ontario (Canada, Finger Lakes, Great Lakes, Greater Niagara, Mid-Atlantic, New York, Ontario, Thousand Islands, USA) |
1,328,025,600 ac-ft | Lake Ontario, one of the world’s five Great Lakes, weaves over state and country borders, delighting Americans, Canadians, and visiting tourists with… |
| Lake Erie (Canada, Chautauqua-Allegheny, Great Lakes, Greater Niagara, Michigan, Mid-Atlantic, Midwest, New York, Northeast, Northwest, Ohio, Ontario, Pennsylvania, Southeast, USA) |
391,987,200 ac-ft | Lake Erie, one of the Great Lakes of North America, straddles the borders of Ohio, Pennsylvania, New York, Michigan, and the Canadian province of Onta… |
| Lake of the Woods MB (Canada, Manitoba, Midwest, Minnesota, Northwest, Ontario, USA) |
15,700,000 ac-ft | Spanning the border from Minnesota into the Canadian provinces of Ontario and Manitoba, Lake of the Woods is an enormous body of water over 68 miles l… |
| Lake Simcoe (Canada, Ontario) |
9,404,273 ac-ft | Spectacular Lake Simcoe is one of the most visited vacation spots in Ontario’s south-central region. Just over an hour north of Toronto, Lake Simcoe p… |
| Lake Saint Clair (Canada, Michigan, Midwest, Ontario, Southeast, USA) |
2,770,944 ac-ft | (Also known as Lake St. Clair) Heart-shaped Lake Saint Clair is the smallest body of water in the Great Lakes system. Tucked between Lake Huron to the north and Lake Erie to the sou… |
| Lake St. Francis (Canada, Mid-Atlantic, New York, Ontario, Quebec, Thousand Islands, USA) |
2,269,997 ac-ft | (Also known as Lac Saint-Francois) Lake St. Francis is part of the 2,340 mile system of locks, canals, and channels that link the Atlantic Ocean to the Great Lakes and the St. Lawrence… |
| Lake Muskoka (Canada, Ontario) |
1,124,459 ac-ft | (Also known as Muskoka Lake, Muskoka Lakes Region) Lake Muskoka, located in Ontario’s Muskoka Lakes Region, is one of Canada’s most famous lakes. Actually a chain of lakes, Muskoka joins Lake Joseph an… |
| Mazinaw Lake (Canada, Ontario) |
555,339 ac-ft | (Also known as Upper Mazinaw Lake, Lower Mazinaw Lake) Amazing Mazinaw Lake holds court as the headwaters of Canada’s Mississippi River in eastern Ontario. This beautiful sprawling lake has alternately del… |
| Charleston Lake (Canada, Ontario) |
353,309 ac-ft | A natural haven awaits vacationers in Eastern Ontario along the shores of Charleston Lake. Balanced along the eastern edge of the Frontenac Arch geolo… |
