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Amazon River Basin (The southern Guianas, not marked on this map, are a part of the basin.) The mouth of the Amazon River. The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about 7,000,000 km 2 (2,700,000 sq mi), [1] or about 35.5 percent of the South ...
The Amazon basin is the largest drainage basin in the world, with an area of approximately 7,000,000 km 2 (2,700,000 sq mi). [3] The portion of the river's drainage basin in Brazil alone is larger than any other river's basin.
The Amazon rainforest, [a] also called Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,000,000 km 2 (2,700,000 sq mi), [ 2 ] of which 6,000,000 km 2 (2,300,000 sq mi) are covered by the rainforest . [ 3 ]
Most of the interior of the Amazon basin is covered by rainforest. [6] The dense tropical Amazon rainforest is the largest tropical rainforest in the world. [2] It covers between 5,500,000 and 6,200,000 square kilometres (2,100,000 and 2,400,000 sq mi) of the 6,700,000 to 6,900,000 square kilometres (2,600,000 to 2,700,000 sq mi) Amazon biome.
The main Amazon river system is the Amazonas-Solimões-Ucayali axis (the 6,762-kilometer (4,202 mi)-long Ucayali is a Peruvian tributary), flowing from west to east. [1] Through the Amazon Basin flows one-fifth of the world's fresh water. [1] A total of 3,615 kilometers (2,246 mi) of the Amazon are in Brazilian territory. [1]
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Its drainage basin is 371,042 km 2 (143,260 sq mi), and the mean annual discharge is 11,207 m 3 /s (395,800 cu ft/s). The river shares its name with the Alto Purús National Park and the Purús Province (and its conformed Purús District ), one of the four provinces of Peru in the Ucayali Region .
The Rio Negro (Spanish: Río Negro [ˈri.o ˈneɣɾo] "Black River"), or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River (accounting for about 14% of the water in the Amazon basin), the largest blackwater river in the world, [8] and one of the world's ten largest rivers by average discharge.