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The Amazon River (UK: / ˈ æ m ə z ən /, US: / ˈ æ m ə z ɒ n /; Spanish: Río Amazonas, Portuguese: Rio Amazonas) in South America is the largest river by discharge volume of water in the world, and the longest or second-longest river system in the world, a title which is disputed with the Nile.
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 American continent.
The Pororoca (Portuguese pronunciation: [pɔɾɔˈɾɔkɐ], [poɾoˈɾɔkɐ]) is a tidal bore, with waves up to 4 m (13 ft) high that travel as much as 800 km (500 mi) inland upstream on the Amazon River and adjacent rivers. Its name might come from the indigenous Tupi language, where it could translate into "great roar".
The Meeting of Waters (Portuguese: Encontro das Águas) is the confluence between the dark Rio Negro and the pale sandy-colored Amazon River, referred to as the Solimões River in Brazil upriver of this confluence. For 6 km (3.7 mi) the waters of the two rivers run side by side without mixing.
The Marañón River (Spanish: Río Marañón, IPA: [ˈri.o maɾaˈɲon], Quechua: Awriq mayu) is the principal or mainstem source of the Amazon River, arising about 160 km to the northeast of Lima, Peru, and flowing northwest across plateaus 3,650 m (12,000 feet) high, [4] it runs through a deeply eroded Andean valley, along the eastern base of ...
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.
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Map of the Amazon river basin. The Hamza and the Amazon are the two main drainage systems for the Amazon Basin. The reported flow rate of the Hamza, at approximately 3,000 cubic metres (110,000 cu ft) per second, is 3% of the Amazon's. [3] It runs west to east, some 4,000 metres (13,000 ft) below the Earth's surface, and follows roughly the ...