Ucayali River
The Ucayali River (Spanish: Río Ucayali, IPA: [ˈri.o wkaˈʝali]) is the main headstream of the Amazon River. It rises about 110 km (68 mi) north of Lake Titicaca, in the Arequipa region of Peru and becomes the Amazon at the confluence of the Marañón close to Nauta city. The city of Pucallpa is located on the banks of the Ucayali.
| Ucayali River | |
|---|---|
Confluence of the Tambo (from bottom) and Urubamba Rivers (background right) forming the Ucayali River (background left) | |
Map of the Amazon Basin with the Ucayali River highlighted | |
| Location | |
| Country | Peru |
| Physical characteristics | |
| Source | confluence of the Tambo and Urubamba Rivers |
| • location | Atalaya, Ucayali, Peru |
| Mouth | Amazon River |
• location | confluence with Marañón River, Loreto, Peru |
| Length | 2,238 km (1,391 mi) 1,460 km (910 mi) |
| Basin size | 351,549 km2 (135,734 sq mi) |
| Discharge | |
| • location | Requena, Peru |
| • average | (Period of data: 1990-2006)13,385 m3/s (472,700 cu ft/s)
13,500 m3/s (480,000 cu ft/s) (Confluence of Marañón: ~13,800 m3/s (490,000 cu ft/s)) |
| • minimum | 3,000 m3/s (110,000 cu ft/s) |
| • maximum | 28,000 m3/s (990,000 cu ft/s) |
| Discharge | |
| • location | Pucallpa, Peru (Basin size: 260,733 km2 (100,670 sq mi) |
| • average | (Period of data: 1990-2006)8,931.2 m3/s (315,400 cu ft/s) |
| Basin features | |
| Tributaries | |
| • left | Tambo, Pachitea, Aguaytia, Pacaya, Pisqui, Cushabatay |
| • right | Urubamba, Tamaya, Tapiche |
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