From https://en.wikipedia.org/wiki/Niagara_Falls https://en.wikipedia.org/wiki/Niagara_Falls : The Niagara River flows north from Lake Erie to Lake Ontario, fo

From https://en.wikipedia.org/wiki/Niagara_Falls https://en.wikipedia.org/wiki/Niagara_Falls : The Niagara River 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 [...] is approximately 58 kilometres (36 mi) long and includes the Niagara Falls.