Purus

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Purus

(po͞oro͞oz`), river, c.2,100 mi (3,380 km) long, rising in the Andes Mts., E Peru. It flows generally northeast in a meandering course, across Acre and Amazonas states, NW Brazil, to the Amazon River. Mostly navigable, it traverses a rubber-producing region and receives the Acre River at Bôca do Acre.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Purús

 

a river in South America, mainly in Brazil, a right tributary of the Amazon. It is 3,200 km long and drains an area of 365,000 sq km. Originating in Peru, near the eastern foothills of the Andes, it meanders through the Amazon Basin within clayey and lightly eroded banks in humid equatorial forests. The mean annual flow rate is 12,600 cu m per sec. High water is in March and April. The Purús is navigable for almost its entire length.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.