Deepest lakes & reservoirs in Ontario, Canada by maximum depth (ft)
The estimated greatest depth of the water in a lake can be measured at the lake’s normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake’s average depth can be calculated:Water volume ÷ Surface Area = Average Depth
Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth.
You can find many of the the world’s deepest lakes on LakeLubbers. If you sort the list, you will find the (maximum depth of) the shallowest lakes in our database. Note: For some lakes, lake depth data is unknown, so this table may display fewer lakes than the total 55 articles we have published for Ontario, Canada lakes.
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Below are lakes within Canada > Ontario, Canada > Compared by maximum depth in feet. This list does not represent all lakes in Ontario, Canada, only the 55 Ontario, Canada lake articles we have published on the LakeLubbers website.
Lake name | Max depth in feet | Lake description |
---|---|---|
Lake Simcoe, ON (Canada, Ontario, Canada) |
130 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 … |
Northern Light Lake (Canada, Ontario, Canada) |
130 ft | Sprawling and unspoiled, Northern Light Lake spreads across western Ontario’s Granite Shield like a blanket of water. The lake isn’t well-known; only … |
Maple Lake ON (Canada, Ontario, Canada) |
120 ft | 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 … |
Wilson Lake, ON (Canada, Ontario, Canada) |
106 ft | Also known as Wauquimakog Lake Ontario visitors who think ‘cottage country’ is limited to the Muskoka Region will miss out on Wilson Lake! Located in Ontario’s ‘near north’, Wilson … |
Kawartha Lakes (Canada, Ontario, Canada) |
105 ft | Also known as The Kawarthas The Kawartha Lakes are a band of beautiful lakes in south-central Ontario, Canada that form the upper watershed of the Trent River. Although 14 lakes … |
Clear Lake ON (Canada, Ontario, Canada) |
103 ft | Also known as Rideau Lakes One of the well-known smaller lakes on Ontario’s Rideau Waterway is Clear Lake. Often overshadowed by bigger lakes such as Big Rideau Lake, Clear Lake … |
Calabogie Lake, ON (Canada, Ontario, Canada) |
102 ft | About 10,000 years ago a glacier retreated across what would become Ontario, leaving over a quarter of a million lakes in its wake. The ice-scour lake … |
Ferguson Lake, ON (Canada, Ontario, Canada) |
101 ft | Also known as Fergusons Lake, Constos Lake If you’ve ever had a yen for an Ontario Cottage Country vacation without the commercialization and crowds, then Ferguson Lake is for you! Only seven m … |
Lake St. Peter, ON (Canada, Ontario, Canada) |
95 ft | Also known as St. Peter's Lake, Lake Saint Peter Lake St. Peter is a 578-acre lake located in rural McClure township, Ontario, Canada. Its beautiful sandy beaches, scenic hiking trails, camping facil … |
Long Lake, ON (Canada, Ontario, Canada) |
80 ft | Long Lake is a sparkling 235-acre recreational lake located in the North Kawartha region of Ontario, Canada. Aptly named Long Lake for its long and na … |
Newboro Lake (Canada, Ontario, Canada) |
78 ft | Also known as Mud Lake, Rideau Lakes Newboro Lake, in Ontario’s Rideau Lakes Region is synonymous with water fun. The 4500-acre lake is home to cottages and fishing camps, islands large a … |
Indian Lake ON (Canada, Ontario, Canada) |
78 ft | Also known as Rideau Lakes Every North American chain of lakes seems to have an Indian Lake; Ontario’s Rideau Waterway is no exception. The name no doubt came from the original … |