Niagara Falls - Horseshoe Falls, Ontario, Canada

From high above the Canadian side of Niagara Falls, this camera looks down on the curve of Horseshoe Falls, where the Niagara River plunges into the gorge and a cloud of mist rises above the water.

Horseshoe Falls is about 187 feet (57 m) high and 2,592 feet (790 m) wide. In the summer tourist season about 90 percent of the river goes over it, making Niagara the most powerful waterfall in North America by flow rate.

Up to three quarters of the river is diverted through tunnels to hydroelectric power stations, and a treaty from 1950 sets how much water must flow over the falls by day and by night.

Did You Know? On October 24, 1901, 63-year-old schoolteacher Annie Edson Taylor became the first person to go over the falls in a barrel, and survived.

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