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The Amazon Basin in the Brazilian States of Amazonas and Pará

3.1S 60W

October 11th, 2009 Category: Rivers

Brazil - September 29th, 2009

Brazil - September 29th, 2009

The Amazon Basin, the largest drainage basin in the world, covers about 40 percent of South America, an area of approximately 6,915,000 square kilometres (2,670,000 sq mi).

In this image, part of the basin in Brazil is visible, from the confluence of the Negro and Solimões (Upper Amazon) Rivers near Manaus in the state of Amazonas (left), to the confluence of the Tapajós and Amazon Rivers near Santarém in the state of Pará (right). The full image shows more of the Negro River northwest of Manaus as well.

The area covered by the water of the Amazon River and its tributaries more than triples over the course of a year. In an average dry season 110,000 square kilometres (42,000 sq mi) of land are water-covered, while in the wet season the flooded area of the Amazon Basin rises to 350,000 square kilometres (135,000 sq mi) .

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