Fraction of water
Ultimately, Canada and the US came up with an innovative solution. In the evenings and winter, they would divert as much as 75 percent of the water that was destined for Niagara Falls. At peak times, when many people come and visit the attraction, that number would be reduced to 50 percent. In the meantime, experts had artificially altered the edge of the famous Horseshoe Falls to create the illusion of a powerful stream.
Amazingly, these diversions still exist, meaning tourists only see a fraction of the water actually meant for Niagara Falls. Nevertheless, the falls remain one of the world’s most popular tourist attractions.