The Americas has some of the biggest rivers and lakes in the world. Lake Superior is the biggest lake and the worlds second biggest. However, Lake Huron and Lake Michigan are considered a single body of water and is therefore bigger. Lake Maracaibo in Venezeula is the biggest lake in South America. The highest navigable lake in the world is Lake Titicaca in Peru and Bolivia.
The largest river in the world by volume is the Amazon. So large in fact that its volume of water is greater than the next ten biggest rivers combined which adds up to about one fifth of the world's total river flow and flows in the largest drainage basin in the world. The Mississippi River is the largest river system in North America and drains 31 U.S. states from the Rockies to the Appalachians and up to the border with Canada.
The Americas also contain the most spectacular waterfalls on Earth. In North America, The Niagara Falls are voluminous falls that straddle the border between the Canada and the USA, although it pales in comparission to Iguazu Falls (Iguassu Falls) on the border of Argentina and Brazil which consists of 275 separate falls in a 2.7 (1.67 miles) kilometers area. The highest waterfall in the world is the Angel Falls in Venezuela.