The Waterfalls of Niagara

Niagara Falls straddles the Canadian-United States International Border and both in the Province of Ontario and the State of New York.  Niagara Falls is the second largest falls on the globe next to Victoria Falls in southern Africa. One fifth of all the fresh water in the world lies in the four Upper Great Lakes-Michigan, Huron, Superior and Erie. The entire outflow empties into the Niagara River and eventually cascades over the falls.

THE HORSESHOE FALLS
The crest line of Niagara Falls was not described as horseshoe shaped until 1721.
One hundred (100%) percent of the Horseshoe Falls is located in Canada.
The speed of the Niagara River at the crest of the Horseshoe Falls is 20 miles (32km/h) per hour.
The height of the Horseshoe Falls is 53 meters (173 feet) to the plunge pool at the base of the Falls.
The crest line of the Horseshoe Falls is 2,200 feet (670m) in width. The crest line of the Horseshoe Falls is 500 feet (152 meters) above sea level.
The water depth at the base of the Horseshoe Falls is 184 feet (56m).
Behind the Horseshoe Falls is a rock shelf approximately 20 feet (6m) in width, however because of the sheer shale cliffs on either side and because of the volume of water falling, access is not possible.
In one second, a total of 600,000 gallons of water flows over the width of the crest line of the Horseshoe Falls.

THE AMERICAN FALLS (Rainbow Falls) & THE LUNA FALLS (Bridal Veil Falls)
The American Falls is also known as the Rainbow Falls.
The Luna Falls is also known as the Bridal Veil Falls or Iris Falls.
One hundred (100%) percent of the Bridal Veil Falls/Luna Falls and the American Falls are located in the U.S.A.
The Bridal Veil Falls and the American Falls has a total crest line of 1,100 feet (326m) in width and has a height of 182 feet (56 meters).
The crest line of the Bridal Veil Falls/Luna Falls is 56 feet  (17 meters) in width. It is located immediately south of the much larger American Falls but separated from the main waterfalls by a thin strip of land known as Luna Island. The crest line of Bridal Veil Falls is 508 feet (155 meters) above sea level.
The crest line of the American Falls (Rainbow Falls) is approximately 950 feet (290 meters) in width. The depth of the water at the crest is approximately 2 feet (0.6 meters). The crest line of the American Falls is 510 feet (155 meters) above sea level.
In one second, a total of 150,000 gallons of water flows over the width of the crest line of the American Falls.

For more interesting facts regarding the Horseshoe Falls, the American Falls and the Luna Falls, please visit:
http://www.niagarafrontier.com/cataract.html