How deep is the Lake Ontario?

Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York. The Canada–United States border spans the centre of the lake.





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Yes! Lake Ontario offers fantastic swimming at many beaches. Not all beaches are 'public beaches', some are naturally occurring 'wild beaches' along Lake Ontario's shoreline. Local Health Units often test water quality at public beaches and lifeguards may supervise swimmers in designated swimming areas.

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Today, Lake Ontario is home - and a source of drinking water - to 9-million people living in Ontario, Canada and New York State, USA.

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Situated in south-east Siberia, the 3.15-million-ha Lake Baikal is the oldest (25 million years) and deepest (1,700 m) lake in the world. It contains 20% of the world's total unfrozen freshwater reserve.

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Lake Ontario occupies a bedrock depression originally produced by stream erosion and later modified by glaciation. Several glacial lakes of varying elevation occupied the basin before the current level and outlet were established about 11,000 years ago.

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Sturgeon (Acipenseridae) are the largest freshwater fishes in the world. Of the 23 sturgeon species worldwide, one is found here in Ontario – the lake sturgeon (Acipenser fulvescens). The lake sturgeon cannot be mistaken for any other species in Ontario.

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Achievements: 1954 – First person to swim across Lake Ontario – in 20 hours and 59 minutes.

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Lake Ontario has had at least 100 known shipwrecks over the last 250 years. While many of us love to think about the mysteries of the deep and the strange creatures therein, most shipwrecks occur from storms and other natural causes.

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The reason Lake Ontario stays cold is because it's so deep. The temperature of the lake changes at different depths, which is due to changes in the density of the water. This is called thermal stratification.

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The Great Lakes are not (noticeably) salty because water flows into them as well as out of them, carrying away the low concentrations of minerals in the water, writes Michael Moore of Toronto. Eventually, this water, with its small load of dissolved minerals or salts, reaches the sea.

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