Rio Negro (Amazon)
| Rio Negro Guainía River | |
|---|---|
Sunset over the Rio Negro, upstream from Manaus | |
Map showing the Rio Negro in the Amazon Basin | |
| Native name |
|
| Location | |
| Countries | |
| Physical characteristics | |
| Source | highlands of Colombia |
| • location | Guainía Department, Amazon region, Colombia |
| • coordinates | 1°56′50″N 70°1′55″W / 1.94722°N 70.03194°W (approximately) |
| • elevation | 250 m (820 ft) (approximately) |
| Mouth | Amazon River |
• location | Manaus, Amazonas State, Brazil |
• coordinates | 3°08′00″S 59°54′30″W / 3.13333°S 59.90833°W |
• elevation | 8 m (26 ft) |
| Length | Rio Negro–Guainía 2,250 km (1,400 mi) |
| Basin size | 714,577.6 km2 (275,900.0 mi2) |
| Width | |
| • average | 2,450 m (8,040 ft) |
| Depth | |
| • average | 20 m (66 ft) (Serrinha); 24 m (79 ft) to 31 m (102 ft) (Manaus) |
| • maximum | 60 m (200 ft) (Manaus) |
| Discharge | |
| • location | Manaus |
| • average | (Period: 2015–2019)34,573 m3/s (1,220,900 cu ft/s) |
| • minimum | 4,240 m3/s (150,000 cu ft/s) |
| • maximum | 64,380 m3/s (2,274,000 cu ft/s) |
| Discharge | |
| • location | Paricatuba (Anavilhanas) |
| • average | (Period: 2008–2019)34,444 m3/s (1,216,400 cu ft/s) |
| • minimum | 7,633 m3/s (269,600 cu ft/s) (2009/10) |
| • maximum | 65,510 m3/s (2,313,000 cu ft/s) (2014/06) |
| Discharge | |
| • location | Serrinha, 0°28′57.4716″S 64°49′36.6492″W / 0.482631000°S 64.826847000°W |
| • average | (Period: 1997–2015)16,845.5 m3/s (594,890 cu ft/s) |
| • minimum | 5,000 m3/s (180,000 cu ft/s) |
| • maximum | 30,000 m3/s (1,100,000 cu ft/s) |
| Discharge | |
| • location | São Felipe, 0°22′11.8056″N 67°18′42.9948″W / 0.369946000°N 67.311943000°W |
| • average | (Period: 1997–2014)8,314.5 m3/s (293,620 cu ft/s) |
| • minimum | 1,200 m3/s (42,000 cu ft/s) |
| • maximum | 15,500 m3/s (550,000 cu ft/s) |
| Discharge | |
| • location | Cucuí |
| • average | (Period: 1997–2014)5,113.1 m3/s (180,570 cu ft/s) |
| • minimum | 400 m3/s (14,000 cu ft/s) |
| • maximum | 10,500 m3/s (370,000 cu ft/s) |
| Basin features | |
| Progression | Amazon → Atlantic Ocean |
| River system | Amazon River |
| Tributaries | |
| • left | Casiquiare, Cauaburi, Marauiá, Macucuaú, Padauari, Demini, Jufari, Branco, Jauaperi, Camanaú, Baependi, Apuaú, Cuieiras, Tarumã Mirim, Tarumã Açu |
| • right | Guainía (Upper Negro), Xié, Içana, Uaupés, Curicuriari, Marié, Tea, Uneiuxi, Aiuanã, Urubaxi, Ararirá, Cuiuni, Caurés, Unini, Jaú, Puduari |
The Rio Negro (Spanish: Río Negro [ˈri.o ˈneɣɾo], Portuguese: Rio Negro [ˈʁi.u ˈneɡɾu], "Black River"), or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River (accounting for about 14% of the water in the Amazon basin), the largest blackwater river in the world, and one of the world's ten largest rivers by average discharge. It originates in the tepuis of the department of Guainía, Colombia, and then flows southeastward before finally entering Brazil. Despite its high flow, the Rio Negro has a low sediment load (5.76 million tonnes per year on average in Manaus).