Napo River
The Napo River (Spanish: Río Napo) is a tributary to the Amazon River that rises in Ecuador on the flanks of the east Andean volcanoes of Antisana, Sincholagua and Cotopaxi.
| Napo river | |
|---|---|
The Napo River to the east of Coca | |
Map of the Amazon Basin with the Napo River highlighted | |
| Location | |
| Countries | |
| Physical characteristics | |
| Source | |
| • location | Confluence of Jatunyaçu and Anzu, Ecuador |
| • coordinates | 1°2′48.6204″S 77°48′27.4392″W |
| • elevation | 430 m (1,410 ft) |
| 2nd source | |
| • location | Jatunyaçu–Verdeyaçu, Andes, Ecuador |
| • coordinates | 0°38′22.6248″S 78°3′29.1924″W |
| • elevation | 3,419 m (11,217 ft) |
| 3rd source | |
| • location | Jatunyaçu–Mulatos, Andes, Ecuador |
| • coordinates | 0°53′55.0464″S 78°24′32.8824″W |
| • elevation | 3,871 m (12,700 ft) |
| 4th source | |
| • location | Anzu River, Andes, Ecuador |
| • coordinates | 1°23′30.408″S 78°4′48.7668″W |
| • elevation | 1,430 m (4,690 ft) |
| Mouth | Amazon River |
• location | 70 km (43 mi) downstream from Iquitos, Loreto Region, Peru |
• coordinates | 3°27′28″S 72°43′3″W |
| Length | 1,130 km (700 mi) |
| Basin size | 103,307.79 km2 (39,887.36 sq mi) |
| Discharge | |
| • location | Francisco de Orellana, Maynas, Loreto Region (near mouth) |
| • average | 7,147.8 m3/s (252,420 cu ft/s) |
| Discharge | |
| • location | Mazán (Bella Vista), Loreto Region, Peru - 79,76 km upstream of mouth (basin size 100,518 km2 (38,810 sq mi) |
| • average | (Period: 1991–2009)6,660 m3/s (235,000 cu ft/s) (Period: 1991/09–2023/08)7,000 m3/s (250,000 cu ft/s) |
| • minimum | MNQ (average): 3,250 m3/s (115,000 cu ft/s) NNQ (minimum): 498.6 m3/s (17,610 cu ft/s)(2016/02) |
| • maximum | MHQ (average): 11,200 m3/s (400,000 cu ft/s) HHQ (maximum) 15,820 m3/s (559,000 cu ft/s)(2015/07), 15,200 m3/s (540,000 cu ft/s)(2023/04) |
| Discharge | |
| • location | Santa Clotilde, Maynas, Loreto Region, Peru - 256.2 km upstream of mouth (basin size 85,770 km2 (33,120 sq mi) |
| • average | (Period: 2002–2011)5,895 m3/s (208,200 cu ft/s) |
| Discharge | |
| • location | Nueva Rocafuerte, Ecuador - 574.1 km upstream of mouth (basin size 26,879.7 km2 (10,378.3 sq mi) |
| • average | (Period: 2001–2009)2,032 m3/s (71,800 cu ft/s) |
| Discharge | |
| • location | Puerto Francisco de Orellana, Ecuador - 782 km upstream of mouth (basin size: 12,343 km2 (4,766 sq mi) |
| • average | (Period: 2001–2009)1,105 m3/s (39,000 cu ft/s) |
| Basin features | |
| Tributaries | |
| • left | Jatunyaçu, Misahualli, Payamino, Coca, Aguarico, Tamboyaçu |
| • right | Anzu, Llocullón, Tiputini, Yasuní, Anahiri, Curaray, Tacshacuraray, Mazán |
The total length is 1,075 km (668 mi). The river drains an area of 103,307.79 km2 (39,887.36 sq mi). The mean annual discharge is 6,660 m3/s (235,000 cu ft/s) (Mazán).
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