Ucayali River

Ucayali River
River, central and northern Peru.

The chief headstream of the Amazon River, it is formed by the junction of the Apurímac and Urubamba rivers. It then meanders north to unite with the Marañón River and form the Amazon. It is navigable for about two-thirds of its 1,000-mi (1,610-km) length.

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▪ river, Peru
Spanish  Río Ucayali  
  headwater of the Amazon, formed by the junction of the Apurímac and Urubamba rivers in east-central Peru. The Ucayali meanders northward from this junction for about 910 miles (1,465 km) through a densely forested floodplain east of the Andes to its junction with the Marañón River, 55 miles (90 km) south-southwest of Iquitos. This confluence is considered to mark the head of the Amazon. The total length of the Ucayali and its longest tributary, the Apurímac, is 1,701 miles (2,738 km).

      Shallow-draft vessels ply the river as far south as its junction with the Pachitea River, 675 miles (1,085 km) upstream from Iquitos. Along the Ucayali are small river ports, notably Pucallpa, Contamana, and Requena.

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Universalium. 2010.

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  • Apurímac River — River, southern Peru. Arising in the Andes Mountains in Peru, it is the most distant source of the Amazon River. It flows northwest to join the Urubamba River and form the Ucayali River. For most of its 430 mi (700 km) length, it flows through… …   Universalium

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  • Marañón River — River, central Peru. Rising in the Andes Mountains, it is part of the headwaters of the Amazon River. It flows northwest at elevations of about 12,000 ft (3,650 m) and descends through jungles in unnavigable rapids and falls; emerging from the… …   Universalium

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