National Geographic : 1951 Jun
719 Air Force Color Ihoto Frenchmen, Lured by Indian Tales of Thundering Waters, Found the Falls in 1678 So moved were La Salle's followers that they fell to their knees in prayer. They saw "wild beasts" attempt to ford the upper river, then vanish over the precipice. Other explorers told tales of canoe-borne Indian maidens cast adrift above the brink to appease angry gods. Of all great waterfalls, Niagara has the steadiest flow-212,000 cubic feet a second. Guaira, or Sete Quedas, Falls, on the Brazil-Paraguay border, and Khon Cataracts, Indochina, carry larger volumes measured across the year. Angel Falls, Venezuela, drops 2,648 feet, 15 times as far. Only the United States portion of Horseshoe Falls is shown (right). Most of its sweeping curve lies in Canada. It drops six feet farther than American Falls. Rainbow Bridge links Niagara Falls, New York (upper left), with Niagara Falls, Ontario. The excursion boat Maid of the Mist docks between American Falls and bridge.