Ontario Power Generation

The Niagara Tunnel runs unseen directly below downtown Niagara Falls, Ontario. It follows Stanley Avenue, running next to two older OPG water diversion tunnels. When complete in 2013 water that flows into the tunnel entrance, just above the Horseshoe Falls, will quickly drop about 100 metres (330 feet). Unheard and unseen, the water will rush around the falls, underneath the city, and onward towards its destination: the Sir Adam Beck Generating Stations. Click here or on the map link to see an animated recreation of the tunnel boring process!





The tunnel route under the city of Niagara Falls