The Niagara River is about 35 mi (56 kilometres) long, including Niagara Falls.
Where the Niagara River makes a 90° turn, a Whirlpool has formed. The Whirlpool has a depth of 38 m or 120 ft. Like all whirlpools, the water circulates in a counterclockwise direction. There is an interesting phenomenon, that happens from about November 1 to April 1, after the water from the Niagara River is diverted before the Falls for the hydro electric power plants. The Whirlpool starts to move in a clockwi...
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