How was Niagara Falls formed?: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Last updated

Nov. 11, 2026

Photos

Map and diagram of the Niagara River and Niagara Falls area, showing the locations of the American Falls and Canadian (Horseshoe) Falls, Goat Island, the Niagara Whirlpool, power stations, bridges, reservoirs, and surrounding cities including Niagara Falls, New York and Niagara Falls, Ontario. The diagram highlights key rapids, hydroelectric facilities, and the river's path from the falls through the Niagara Gorge to the Niagara Escarpment.

See All Images →

Topics

erosion waterfall cataract What causes soil erosion?How was the Grand Canyon formed?Why is Niagara Falls famous?Could We Lose All the Soil on Earth?fall line cascade How Old Is Niagara Falls?