Flow rate (daytime peak)2,800 m^3
3.7 millionBottles of wine
66.7Living rooms
Per second
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3,000 tonnes of water plummeting every second/Events & Phenomena
Niagara Falls moves roughly 2,800 cubic meters of water per second over the brink during peak daytime flow, which is about 3,000 tonnes per second. At night, up to 75% of the water is diverted through hydroelectric tunnels. The falls erode the cliff face at a rate of about 30 cm per year. In 1969, the US Army Corps of Engineers actually turned off the American Falls for five months to study the rock face.
Per second
About 2,800 tonnes/s
4.4 GW (US + Canada)
About 30 cm per year