
Sete Quedas Waterfall flooded by Itaipu reservoir (archive)
25 years ago, in October 1982, the planet´s greatest waterfall was drowned, a victim of the filling of Itaipu Reservoir (Brazil/Paraguay). The so-called "Seven Falls of Guaíra", or "Sete Quedas", in reality a series of 18 waterfalls, were at 114 meters in height not the world´s tallest falls, but they were easily the most powerful in volume, with more than double the flow of Niagara Falls and 12 times the flow over Victoria Falls.