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Lake Ontario has about 1,640 cubic kilometres of water. That would translate to 1,640 trillion tonnes, or 1.64 quadrillion tonnes.

But the surface area is 18,960 sq.km. That would mean it would have an average depth of about 26m.

Compare that to the total amount of water on Mercury: 1 trillion tonnes (Nature Magazine, 29 Nov, 2012).

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11y ago
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15y ago

393 cu mi (1,640 km3)

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Q: How much water is in lake Ontario?
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