River
Bahr Aouk River
650 km from source to mouth · Chad and Central African Republic.
Chad and Central African RepublicFlows into Chari River4th longest in Chad
In numbers
Length
650km
Average flow
110m³/s
Basin
103,577km²
Drop
122m
from 488 m to 366 m
Countries
2
The journey
From source to mouth
650 km of river and 0 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 488 m
- 650 kmChari Riverat 366 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River
At the mouth it carries 114 m³/s on average: an Olympic pool every 22 seconds. It drops from 488 m to 366 m, 0.2 m per kilometre on average. Its basin covers 103,577 km², about the size of IS. 866,000 people live in it. Highest water: September; lowest: from January to April. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- SarhLargest city on its banks · 138,928 people
- From November to JanuaryThe best months to visit
Bahr Aouk River, month by month
Highest water: September
Lowest water: from January to April. Best months to visit: from November to January.
From about 32 m³/s in the lowest month to 340 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
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The basin
Bahr Aouk River: the basin in numbers
136,570 km² of land send their water to this river. This is what lives on it.
- 866,000people live in the basin
- 6/km²people per km²
- 524maverage altitude of the basin
- 882mmof rain a year (basin average)
- 26.5°Caverage air temperature
- 32%protected areas
What covers the basin
- 12% Forest
- 3% Cropland
- 31% Pasture
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Bahr Aouk River: what you find on the way
- 8Weirs
From OpenStreetMap, within 2.5 km of the river. Not mapped is not the same as not there.
From space
The source and the mouth, seen from orbit


Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Tributaries
Where it flows, and what flows into it
It flows into
Chari RiverWhere these numbers come from
| Name, length, places | Wikidata (Q769856) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every source and licence is on the data sources page.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.