Unearthed photos of Niagara Falls without water - Yahoo! News (external - login to view)
The Niagara Falls are fed by the Niagara river which flows from the U.S. I've seen the falls in the shut down mode several times and it is not too pretty. It is pretty impressive when all the water is running, and pretty noisy as well.
I remember being in a hotel at Niagara Falls at meetings, at lunch time I went up to my room to check my email, on the way back down, I didn't want to wait for the elevator, so I took the stairs. I burst out of the stairwell, and pretty much ran into this big serious guy...he was RCMP...five minutes later, Stockwell Day gave his famous speech about Niagara flowing south...it was funny as heck.