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Lake Ontario


Lake Ontario is one of the five Great Lakes of North America. With a surface area of 7,340 square miles, it is the smallest of all the Great Lakes. It is also the easternmost of all the great lakes. The province Ontario was named after this lake. The total water volume of the lake is 1,640 cubic kilometers.

Its average depth is 86 meters and the maximum depth is 244 meters. This name has been derived from the Wyandot language that means ‘Lake of Shining Waters’. The drainage basin of the lake covers an area of 24,720 square miles.


Quick Facts: –

  • The main feeder to Lake Ontario is Niagara River.
  • This lake is also home to the American Eel. This eel species has been called the quintessential Lake Ontario fish.
  • It is home to the Sandbanks Provincial Park which is the largest freshwater dune system on earth.
  • There are total approximately 2,000 islands that line a border between Canada and the United States.
  • Wolfe Island is the largest island. It covers an area of 48 square miles.
  • On the basis of surface area, the lake is the 14th largest lake in the world.
  • The lake has a retention time of approximately 6 years.
  • The shoreline measures about 1,146 kilometers in length.
  • This lake discharges into the Saint Lawrence River near Kingston, Ontario. This way it serves as the outlet to the Atlantic Ocean.
  • It is the most polluted lake out of the five Great Lakes but efforts are being made to clean it up.



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Declan, Tobin. " Facts for Kids about Lake Ontario ." Easy Science for Kids, May 2020. Web. 30 May 2020. < >.

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Tobin, Declan. (2020). Facts for Kids about Lake Ontario. Easy Science for Kids. Retrieved from

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