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River source. The headwater of a river or stream is the farthest point on each of its tributaries upstream from its mouth / estuary into a lake / sea or its confluence with another river. Each headwater is considered one of the river's sources, as it is the place where surface runoffs from rainwater, meltwater and/or spring water begin ...
A river is a natural flow of freshwater that flows on or through land towards another body of water downhill. [1] This flow can be into a lake, an ocean, or another river. [1] A stream refers to water that flows in a natural channel, a geographic feature that can contain flowing water. [2]
The Amazon River is the largest river in the world in terms of its flow rate. In addition, it is the second longest river, measuring 6,575 km (4,086 mi) [3] from its source to the mouth of the Atlantic Ocean [4] after the Nile River which is considered to be the longest river in the world (see Source of the Nile River), although there is some dispute.
The Mississippi River[b] is the primary river and second-longest river of the largest drainage basin in the United States. [c][15][16] From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for 2,340 miles (3,766 km) [16] to the Mississippi River Delta in the Gulf of Mexico.
Map showing the Upper and Lower Colorado River Basin, and adjacent areas supplied by Colorado River water. The Colorado River Basin consists of 246,000 square miles (640,000 km 2), making it the seventh largest drainage basin in North America. [2] About 238,600 square miles (618,000 km 2), or 97 percent of the basin, is in the United States. [40]
River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts. [1][2] River ecosystems are part of larger watershed networks or catchments, where smaller headwater streams ...
The most remote source that is indisputably a source for the White Nile is the Kagera River; however, the Kagera has tributaries that are in contention for the farthest source of the White Nile. Two start in Burundi: the Ruvyironza River (also known as the Luvironza) and the Rurubu River .
The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways. The Mississippi River is the largest drainage basin in the United States. [3] In the United States, the Mississippi drains about 41% of the country's rivers.