Everything about Ucayali River totally explained
» Alternative use: Ucayali Region
The
Ucayali River, which rises about 110 km (70 miles) north of
Lake Titicaca, is a branch of the
Amazon River near the
Madeira River.
The
Río Ucayali, together with
Apurímac River,
Ene River, and
Tambo River, is today considered the main headwater of the
Amazon River, totalling a length of 2,669.9 km from the source of the
Apurímac at
Nevado Mismi to the confluence of the Ucayali and
Marañón Rivers:
- Apurímac River (total length): 730.7 km
- Ene River (total length): 180.6 km
- Tambo River (total length): 158.5 km
- Ucayali River (confluence with Tambo River to confluence with the Marañón): 1,600.1 km
The Ucayali was first called
San Miguel, then
Ucayali,
Ucayare,
Poro,
Apu-Poro,
Cocama and
Rio de Cuzco.
Peru has fitted out many costly and ably-conducted expeditions to explore it. One of them (
1867) claimed to have reached within 380 km (240 miles) of
Lima, and the little steamer "Napo" forced its way up the violent currents for 124 km (77 miles) above the junction with the
Pachitea River as far as the
Tambo River, 1240 km (770 miles) from the confluence of the Ucayali with the Amazon. The "Napo" then succeeded in ascending the
Urubamba branch of the Ucayali 56 km (35 miles) above its union with the Tambo, to a point 320 km (200 miles) north of
Cuzco.
The remainder of the Urubamba, as shown by
Bosquet in
1806 and
Castelnau in
1846, is interrupted by cascades, reefs and numberless other obstacles to navigation. Torres, who explored the Alto Ucayali for the Peruvian government, gives it a length of 186 miles, counting from the mouth of the
Pachitea to the junction of the Tambo and Urubamba. Its width varies from 400-1200 m (1300 to 4000 feet), due to the great number of islands. The current runs from 5-6 km/h (3 to 4 miles an hour), and a channel from 20-50 m (60 to 150 feet) wide can always be found with a minimum depth of 1.5 m (5 feet). There are five bad passes, due to the accumulation of trees and rafts of timber. Sometimes enormous rocks have fallen from the mountains and spread over the river-bed causing huge whirlpools.
The river gives its name to the
Ucayali Region of
Peru.
Further Information
Get more info on 'Ucayali River'.
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