Tocantins , river, Brazil

Tocantins river, 1,640 mi (2,639 km) long, formed in S central Goiás state, Brazil, by the confluence of two headstreams. It flows N to the Pará River, the southern distributary of the Amazon, SW of Belém. It is only partly navigable because of rapids. There are diamond washes near Carolina. The main tributary is the Araguaía.

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