Niagara River

River in New York, United States and Ontario, Canada

The Niagara River ( ny-AGG-ər-ə, -⁠grə) flows north from Lake Erie to Lake Ontario, forming part of the border between Ontario, Canada, to the west, and New York, United States, to the east. The river, occasionally described as a strait, is approximately 58 kilometres (36 miles) long and is known for the Niagara Falls. Over the past 12,000 years, the falls have moved roughly 11 kilometres (6.8 mi) upstream from the leading edge of the Niagara Escarpment, creating a gorge below the falls.

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