Napo river | |
---|---|
Location | |
Countries | |
Physical characteristics | |
Source | |
• location | Confluence of Jatunyaçu and Anzu, Ecuador |
• coordinates | 1°2′48.6204″S 77°48′27.4392″W / 1.046839000°S 77.807622000°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 / 0.639618000°S 78.058109000°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 / 0.898624000°S 78.409134000°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 / 1.39178000°S 78.080213000°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 / 3.45778°S 72.71750°W |
• elevation | 78 m (256 ft) |
Length | 1,130 km (700 mi)[1] |
Basin size | 103,307.79 km2 (39,887.36 sq mi)[2] |
Discharge | |
• location | Francisco de Orellana, Maynas, Loreto Region (near mouth) |
• average | (Period: 1971–2000)7,147.8 m3/s (252,420 cu ft/s)[2] |
• minimum | 3,200 m3/s (110,000 cu ft/s)[3] |
• maximum | 10,800 m3/s (380,000 cu ft/s)[3] |
Discharge | |
• location | Mazán (Bella Vista), Loreto Region, Peru - 79,76 km upstream of mouth (basin size 100,518 km2 (38,810 sq mi)[4] |
• average | (Period: 1991–2009)6,660 m3/s (235,000 cu ft/s)[6] (Period: 1991/09–2023/08)7,000 m3/s (250,000 cu ft/s)[5] |
• 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)[5] |
• 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)[5] |
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)[4] |
Discharge | |
• location | Nueva Rocafuerte, Ecuador - 574.1 km upstream of mouth (basin size 26,879.7 km2 (10,378.3 sq mi)[6] |
• average | (Period: 2001–2009)2,032 m3/s (71,800 cu ft/s)[4] |
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)[4] |
Basin features | |
Progression | Amazon → Atlantic Ocean |
River system | Amazon |
Tributaries | |
• left | Jatunyaçu, Misahualli, Payamino, Coca, Aguarico, Tamboyaçu |
• right | Anzu, Llocullón, Tiputini, Yasuní, Anahiri, Curaray, Tacshacuraray, Mazán |
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.
The total length is 1,075 km (668 mi). The river drains an area of ca 103,000 km2. The mean annual discharge at Mazán 6,660 m3/s (235,000 cu ft/s).[7][6]