US & Canada
Seeing as Niagara Falls is a natural border between Canada and the US, it belongs to both countries. From either side, it gets over 15 million tourists a year or more than 30 million tourists a year in total. So, essentially, both countries share the benefits of the waterfalls.
Shared Benefits
Six million cubic feet of water are lost in a single minute at the Falls. Consider the devastation that a massive amount of water could wreak outside of the Falls – it could completely devastate entire cities.