Alps rivers such as the Danube have major tributaries flowing into them that originate in the Alps. The Rhône is second to the Nile as a freshwater source to the Mediterranean Sea; the river begins as glacial meltwater, flows into Lake Geneva, and from there to France where one of its uses is to cool nuclear power plants. The Rhine originates in a 30 square kilometre area in Switzerland and represents almost 60 percent of water exported from the country. Tributary valleys, some of which are complicated, channel water to the main valleys which can experience flooding during the snow melt
Grand River (Ohio) Grand River (Ohio) The Grand River is a tributary of Lake Erie, 102.7 miles (165.3 km) long, in northeastern Ohio in the United States. Via Lake Erie, the Niagara River and Lake Ontario, it is part of the watershed of the St. Lawrence River, which flows to the Atlantic Ocean. It drains an area of 712 mi² (1844 km²). The Grand River rises in southeastern Geauga County and initially flows eastwardly into Trumbull County. Downstream of West Farmington it turns northward into Ashtabula County, where it passes the village of Rock Creek and then turns westward into Lake County, where