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How deep is the water in 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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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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Millions of people rely on the Great Lakes for their drinking water, which is considered safe if filtered properly. The city of Toronto treats over 1 billion litres of drinking water every day. That water is collected from Lake Ontario through intake pipes deep below the surface and at least 1 km from the shore.

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Lake Superior is the Cleanest and Clearest Great Lake Because of its somewhat isolated location and long cold winters, not much farming is done along Superior's shores. This means lower amounts of nutrients, sediments, and organic material are floating around the lake.

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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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Lake Ontario may be the most polluted out of the five Great Lakes. All of the other lakes flow into it, giving it their pollution. It also receives runoff from farms and businesses around it, according to the University of Wisconsin Sea Grant Institute.

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

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The deepest section in the Niagara River is just below the falls. It is so deep that it equals the height of the falls above: 52 metres (170 ft.) The Upper Niagara River extends 35 kilometres (22 mi.) from Lake Erie to the Cascade Rapids, which begin 1 kilometre (0.6 mi.)

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Annecy. Regarded as the clearest lake in Europe, Annecy is home to a picturesque town of the same name – sometimes also known as Venice of the Alps due to its numerous water canals.

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Blue Lake, New Zealand Blue Lake has underwater visibility up to 70 to 80 meters or 230 to 260 feet down, which is insane! Apart from being the world's clearest lake, it's also the clearest body of natural freshwater. The water in Blue Lake is comparable to distilled water based on laboratory measurements.

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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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Dry yourself off with a towel as soon as you come out of the water. If possible, have a shower and dry off right away. However, showering will not remove any larvae that have already burrowed under your skin.

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The graph below shows the range of monthly Lake Ontario water temperature derived from many years of historical sea surface temperature data. The warmest water temperature is in August with an average around 72.9°F / 22.7°C. The coldest month is March with an average water temperature of 36°F / 2.2°C.

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