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Here are the 21 lakes we have listed within Canada > Ontario - compared by Largest Lakes - Water Volume.

Note: For some lakes, "Largest Lakes - Water Volume" is unknown or does not apply, so this comparison may show fewer lakes than you originally selected. Suggest a new lake.

Lake Name Volume in acre-feet Lake Description
Lake Superior
(Ontario, Canada / Great Lakes / Michigan, USA / Minnesota, USA / Wisconsin, USA)
9,799,680,000 Lake Superior Pictures Skipping over state and country borders, Lake Superior, the largest, deepest, coldest, cleanest, least developed, and most pristine of the Great Lakes, reigns as the largest freshwater lake in the world by surface area. By volume, this 31,820 square mile colossus ranks fourth - a whopping 2,900 cubic ...
Lake Michigan-Huron
(Ontario, Canada / Great Lakes / Illinois, USA / Indiana, USA / Michigan, USA / Wisconsin, USA)
6,858,776,000 Lake Michigan-Huron Pictures 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 are connected by the five-mile-wide Straits of Mackinac. Hydrologically, this makes these "two lakes" a single lake. Some hydrologists designate the ...
Lake Huron
(Ontario, Canada / Great Lakes / Michigan, USA)
2,872,320,000 Lake Huron Pictures 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 incredible 3,825-mile shoreline. The massive lake is the third largest of the Great Lakes by water volume, containing 850 cubic miles of fresh water within ...
Lake Ontario
(Ontario, Canada / Great Lakes / New York, USA)
1,328,025,600 Lake Ontario Pictures Lake Ontario, one of the world's five Great Lakes, weaves over state and country borders, delighting Americans, Canadians, and visiting tourists with its deep, clear, clean waters. Proudly home to a staggering 4,700,000 acres (7,340 square miles), Lake Ontario is the smallest of the Great Lakes, the ...
Lake Erie
(Ontario, Canada / Great Lakes / New York, USA / Pennsylvania, USA / Michigan, USA / Ohio, USA)
391,987,200 Lake Erie Pictures Lake Erie, one of the Great Lakes of North America, straddles the borders of Ohio, Pennsylvania, New York, Michigan, and the Canadian province of Ontario. The lake is named after the Native American tribe that inhabited its shores before being killed off by the Iroquois League for aiding their enemy, ...
Lake of the Woods
(Manitoba, Canada / Ontario, Canada / Minnesota, USA)
15,700,000 Lake of the Woods Pictures 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 long, 59 miles wide, with 25,000 miles of shoreline - the world's longest lake shoreline. The western part of the lake is mostly open water, while the ...
Lake Simcoe
(Ontario, Canada)
9,404,273 Lake Simcoe Pictures Lake Simcoe Message Forums 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 provides 287 square miles of water surface and 118 miles of shoreline, guaranteeing plenty of space for every type of water-based amusement visitors could ...
Lake Saint Clair
(Ontario, Canada / Michigan, USA)
2,770,944 Lake Saint Clair Pictures 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 south, 275,200-acre Lake Saint Clair is conveniently located close to Detroit, Michigan and Windsor, Ontario. Lake Huron to the north flows into the lake ...
Lake St. Francis
(Ontario, Canada / Quebec, Canada / New York, USA)
2,269,997 Lake St. Francis Pictures Lake St. Francis Message Forums 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 River known as the St. Lawrence Seaway. The 31 mile long lake borders southeastern Ontario, southwestern Quebec, and northern New York State. Lac ...
Lake Muskoka
(Ontario, Canada)
1,124,459 Lake Muskoka Pictures Lake Muskoka Message Forums 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 and Lake Rosseau, along with several smaller lakes, to make up what Canada calls "Cottage Country." The chain of rocky-shored lakes contains many islands, ...
Mazinaw Lake
(Ontario, Canada)
555,339 Mazinaw Lake Pictures Mazinaw Lake Message Forums 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 delighted and intimidated those who ventured onto its waters for hundreds of years. First Nations tribes spoke in hushed terms of Mishipashoo, legendary ...
Charleston Lake
(Ontario, Canada)
353,309 Charleston Lake Pictures Charleston Lake Message Forums A natural haven awaits vacationers in Eastern Ontario along the shores of Charleston Lake. Balanced along the eastern edge of the Frontenac Arch geological formation, Charleston Lake has been the place to go for swimming, boating and fishing for over a hundred years. Charleston Lake has seen visitors ...
Lake Nipissing
(Ontario, Canada)
311,319 Lake Nipissing Pictures Lake Nipissing Message Forums Located in the Near North region of Ontario, Lake Nipissing is the fifth largest lake in Ontario excluding the Great Lakes. This relatively shallow 211,200-acre lake is situated between the Ottawa River and Georgian Bay. It drains into Georgian Bay via the French River and with an average depth of only ...
Kennisis Lake
(Ontario, Canada)
270,159 Kennisis Lake Message Forums A true jewel in the crown of Ontario's Cottage Country, 3500-acre Kennisis Lake has been the prefect vacation getaway for generations of Canadian cottagers. Located in the area popularly known as the Haliburton Highlands, Kennisis Lake is the largest lake in the region and a vital part of the Trent-Severn ...
Trout Lake
(Ontario, Canada)
229,189 Trout Lake Pictures Trout Lake Message Forums Located in Ontario's Nipissing District, Trout Lake has everything to offer the northwoods adventurer looking for water-based activities. Often overshadowed by its larger sister Lake Nipissing, Trout Lake offers all of the fishing, frolic and fun that the bigger lake does, just on a bit smaller and ...
Haliburton Lake
(Ontario, Canada)
143,199 Haliburton Lake Pictures Haliburton Lake Message Forums Haliburton Lake is located in Ontario, Canada in a region called the Haliburton Highlands. The name was given due to the beautiful scenery that resembles the Scottish Highlands and the Scottish ancestry of the founding population. Haliburton Lake is named after Thomas Chandler Haliburton, a man originally ...
Upper Rideau Lake
(Ontario, Canada)
88,965 Upper Rideau Lake Pictures Upper Rideau Lake Message Forums Also known as: Rideau Lakes
Upper Rideau Lake holds a prominent place in Ontario's 'other Cottage Country'. Although many think of the area around Lake Muskoka as Eastern Canada's vacation playground, serious boaters all know about Upper Rideau Lake. A marvel of early 1800s ingenuity, the Rideau Canal is the oldest continuously ...
Maple Lake
(Ontario, Canada)
31,999 Maple Lake Message Forums Maple Lake is a lovely natural freshwater lake tucked away in the Haliburton Highlands of Ontario. This lake has 829 acres of calming blue waters. The Haliburton Highlands region is named in honor of Thomas Chandler Haliburton and for its resemblance to the Scottish Highlands. The lake is a popular ...
Little Kennisis Lake
(Ontario, Canada)
28,221 Little Kennisis Lake Message Forums Little Kennisis Lake is the smaller counterpart to Kennisis Lake, which is one of the largest lakes in the Haliburton Highlands of Ontario, Canada. Little Kennisis Lake is a relatively secluded lake for those who enjoy their privacy, but it also offers activities just minutes away at the more populated ...
Lake Opinicon
(Ontario, Canada)
16,126 Lake Opinicon Pictures Lake Opinicon Message Forums Also known as: Rideau Lakes
Opinicon Lake is part of a chain of lakes known as the Rideau Waterway in Ontario, Canada. The lake is connected to others by a canal system called the Rideau Canal. The Canal has 45 locks at 23 stations connecting more than eight lakes including Lower Rideau Lake, Big Rideau Lake, Upper Rideau Lake, ...
Benson Lake
(Ontario, Canada)
4,286 Benson Lake Pictures Benson Lake Message Forums Also known as: Rideau Lakes
Benson Lake is part of the historic Rideau Waterway in Ontario, Canada. Benson Lake is one of six lakes surrounding Scott's Island. Benson Lake, Clear Lake, Indian Lake, Mosquito Lake, Newboro Lake, and Loon Lake all share the same water level and can be traveled without passing through one of the locks ...


The Most Popular Vacation Lakes