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Rio Negro Guainía River | |
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![]() Sunset over the Rio Negro, upstream from Manaus | |
![]() Map showing the Rio Negro in the Amazon Basin | |
Native name |
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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)[1] |
Length | Rio Negro–Guainía 2,250 km (1,400 mi)[2] |
Basin size | 714,577.6 km2 (275,900.0 sq mi)[3] |
Width | |
• average | 2,450 m (8,040 ft)[4] |
Depth | |
• average | 20 m (66 ft) (Serrinha); 24 m (79 ft) to 31 m (102 ft) (Manaus)[3] |
• maximum | 60 m (200 ft) (Manaus)[4] |
Discharge | |
• location | Manaus |
• average | (Period: 2015–2019)34,573 m3/s (1,220,900 cu ft/s)[4] |
• minimum | 4,240 m3/s (150,000 cu ft/s)[3] |
• maximum | 64,380 m3/s (2,274,000 cu ft/s)[3] |
Discharge | |
• location | Paricatuba (Anavilhanas) |
• average | (Period: 2008–2019)34,444 m3/s (1,216,400 cu ft/s)[5] |
• minimum | 7,633 m3/s (269,600 cu ft/s) (2009/10)[5] |
• maximum | 65,510 m3/s (2,313,000 cu ft/s) (2014/06)[5] |
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)[7] |
• minimum | 5,000 m3/s (180,000 cu ft/s)[6] |
• maximum | 30,000 m3/s (1,100,000 cu ft/s)[6] |
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)[7] |
• minimum | 1,200 m3/s (42,000 cu ft/s)[6] |
• maximum | 15,500 m3/s (550,000 cu ft/s)[6] |
Discharge | |
• location | Cucuí |
• average | (Period: 1997–2014)5,113.1 m3/s (180,570 cu ft/s)[7] |
• minimum | 400 m3/s (14,000 cu ft/s)[6] |
• maximum | 10,500 m3/s (370,000 cu ft/s)[6] |
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 (Portuguese: Rio Negro [ˈʁi.u neɡɾu]; Spanish: Río Negro [ˈri.o ˈneɣɾo] "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,[8] and one of the world's ten largest rivers by average discharge. Despite its high flow, the Rio Negro has a low sediment load (5.76 million tonnes per year on average in Manaus).[4]
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