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Aiuruoca River. Ajarani River. Alalaú River. Alambari River (Tietê River) Alambari River (Turvo River) Alcântara River. Alcobaça River (Brazil) Da Aldeia River. Aldeia Velha River.
The largest river system in Brazil is the Amazon, which originates in the Andes and receives tributaries from a basin that covers 45.7% of the country, principally the north and west. [1] 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 ...
The Amazon basin, the largest in the world, covers about 40% of South America, an area of approximately 7,050,000 km 2 (2,720,000 sq mi). It drains from west to east, from Iquitos in Peru, across Brazil to the Atlantic. It gathers its waters from 5 degrees north latitude to 20 degrees south latitude.
Formerly called Rio da Dúvida (“River of Doubt”), the river is named after Theodore Roosevelt, who traveled into the central region of Brazil during the Roosevelt–Rondon Scientific Expedition of 1913–14. The expedition, led by Roosevelt and Cândido Rondon, Brazil's most famous explorer and the river's discoverer, sought to determine ...
The Rio Negro (Portuguese: Rio Negro [ˈʁi.u neɡɾu]; 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.
Map of the Amazon Basin with the Madeira River highlighted. The Madeira River (Portuguese: Rio Madeira [maˈdejɾɐ]) is a major waterway in South America.It is estimated to be 1,450 km (900 mi) in length, while the Madeira-Mamoré is estimated near 3,250 km (2,020 mi) [4] or 3,380 km (2,100 mi) in length depending on the measuring party and their methods.
The Uruguay River (Spanish: Río Uruguay [ˈri.o wɾuˈɣwaj]; Portuguese: Rio Uruguai [ˈʁi.u uɾuˈɡwaj]) is a major river in South America. It flows from north to south and forms parts of the boundaries of Brazil, Argentina and Uruguay, separating some of the Argentine provinces of La Mesopotamia from the other two countries.
The São Francisco River (Portuguese: Rio São Francisco, Portuguese pronunciation: [sɐ̃w fɾɐ̃ˈsisku]) is a large river in Brazil.With a length of 2,914 kilometres (1,811 mi), [1] it is the longest river that runs entirely in Brazilian territory, and the fourth longest in South America and overall in Brazil (after the Amazon, the Paraná and the Madeira).