Bodies of Water of Brazil

Sometimes referred to as Amazônia, the Amazon Rainforest is a natural region and biome in northern South America that occupies the Amazon Basin, a drainage basin of the Amazon River and its tributaries. Nine countries have some parts of the Amazon region within their borders.

The Beni River flows north through Bolivia after rising in the Andean slopes of the Cordillera Real. The Mamoré River is formed by numerous headwaters that drain the Llanos de Moxos. The two rivers join to form the Madeira River on the border with Brazil.

The Caquetá River as it is known in Colombia, or the Japurá as it is known in Brazil, is a tributary of the Amazon River and has a total length of approximately 1,750 mi. About two-thirds of the tributary is in Colombia and the other one-third is in Brazil. The Caquetá-Japurá Basin is the ninth-largest tributary basin in the Amazon.

Guanabara Bay is a picturesque bay of the Atlantic Ocean, located in southeast Brazil, in the state of Rio de Janeiro. On its western shore lies the cities of Rio de Janeiro and Duque de Caxias and on its eastern shore the cities of Niterói and São Gonçalo. More than 130 islands dot the bay.

The Guaraní Aquifer System is a large underground groundwater reservoir and hydrogeological system. It is a transboundary aquifer, spread across four South American countries: Argentina, Brazil, Paraguay, and Uruguay.

The Juruá River is the most winding river in the Amazon Basin. Beginning in the highlands of east-central Peru and crossing into northwestern Brazil before it eventually empties into the Amazon River, it exhibits curvature and sluggishness as it traverses the low, half-flooded forest countryside.

The Madeira River is one of South America's major rivers. It is part of the Amazon Basin and is the largest and most important tributary of the Amazon River. Its headwaters are located in the Bolivian Andes, over 2,000 miles from its confluence with the Amazon in Brazil.

The Paraguay River is South America's fifth-largest river, running through Brazil, Paraguay and Argentina. From the Brazilian state of Mato Grasso to its confluence with the Paraná River in Argentina, it serves as part of the Paraguayan border with Argentina as well as with Brazil.

The Paraná River is the second longest river in South America. Running through Brazil, Paraguay and Argentina, it becomes an alluvial basin before emptying into the Río de la Plata. The Paraná Delta consists of several islands known as the Islas del Paraná.

The Purus River, which rises in Peru, is a tributary of the Amazon River. The river flows through the Amazon Rainforest until it merges with the Solimões-Amazon River upstream from Manaus, Brazil. The river, which is highly meandering, has huge floodplains and is flanked by numerous lakes near its shores.