北美的尼亚加拉大瀑布是举世闻名的,但是了解它的丰富的水力资源的人就不多了.尼亚加拉河长仅56公里,但它却是世界上最大的水力水电资源之一.在13公里的瀑布和急流段落差就达99米.河的上游同伊利湖、休伦湖、密西根湖和苏必利尔湖相通,下游流入安大略湖.据说这五大湖蕴藏着世界上陆地淡水总量的五分之一.这就使得尼亚加拉河有取之不尽的水源. Niagara Falls in North America is world-famous, but not many people know its rich water resources.The Niagara River is only 56 kilometers long, but it is one of the largest hydropower resources in the world.At 13 kilometers Falls and rapids up to 99 meters gap between the upper reaches of the river and Lake Erie, Lake Huron, Lake Michigan and Lake Superior connected to the lower reaches of Lake I. It is said that these five lakes contain the world’s terrestrial freshwater five-fifths of the total This makes the Niagara River have an inexhaustible source of water.