How old are Niagara Falls?

Anyone know when the falls first came into existence?

Probally right after the ice age. The Niagara Falls were just found by the settlers from Europe when Canada was found. My guess: when the glaciers were melting after the last ice age, it carved out Niagara falls, then water from the St.Lawerence river flowed in. I don't think anyone knowsfor sure when the Niagara Falls came into existence. Hoped i helped!

don't really know for sure seince the ice age maybe?

In terms of geology, Niagara Falls is quite young. The formation of the falls began at the end of the Ice Age. Large torrents of water were released from the melting ice, draining into what is now the Niagara River. About 12,300 years ago, the water plunged over the edge of the Niagara Escarpment, a cliff at what is now Lewiston, New York. The force of the water wore away the rock layers and Niagara Falls moved upstream, eventually reaching its present location