River
Casamance River
401 km from source to mouth · Senegal.
SenegalFlows into Atlantic Ocean2nd longest in Senegal
In numbers
Length
401km
Average flow
86m³/s
Basin
18,700km²
Drop
39m
from 39 m to 0 m
Country
1
The journey
From source to mouth
401 km of river and 8 stops on the way: 7 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 39 m
- 118 kmKolda103,574 people
- 150 kmSaré Yoba Diéga3,551 people
- 180 kmDiana Malari3,066 people
- 242 kmSédhiou31,511 people
- 282 kmDiattakounda4,356 people
- 314 kmGoudomp18,239 people
- 339 kmSoungrougroutributary
- 379 kmZiguinchor214,874 people
- 401 kmAtlantic Oceanat 0 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Senegal
At the mouth it carries 86 m³/s on average: an Olympic pool every 29 seconds. It drops from 39 m to 0 m, 0.1 m per kilometre on average. Its basin covers 18,700 km², about the size of FJ. 868,000 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
- ZiguinchorLargest city on its banks · 214,874 people
- Ziguinchor Airport (ZIG)Nearest airport with scheduled flights, 4 km from the cityCar hire at DSS airport (Dakar)Discover Cars · Affiliate link↗
- On the water17 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From December to FebruaryThe best months to visit
Casamance River, month by month
Highest water: September
Lowest water: from January to April. Best months to visit: from December to February.
From about 15 m³/s in the lowest month to 330 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
Casamance River: the basin in numbers
14,867 km² of land send their water to this river. This is what lives on it.
- 868,000people live in the basin
- 60/km²people per km²
- 35maverage altitude of the basin
- 1,062mmof rain a year (basin average)
- 26.9°Caverage air temperature
- 15%protected areas
What covers the basin
- 30% Forest
- 12% Cropland
- 35% Pasture
- 1% Towns and cities
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
Casamance River: what you find on the way
- 2Boat ramps
- 11Ferry piersSédhiou, Gare Maritime de Ziguinchor and 9 more
- 4MarinasAdéane, Agnack Petit and 2 more
From OpenStreetMap, within 1.9 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.
Photos
Casamance River in pictures




Tributaries
Where it flows, and what flows into it
Tributaries (1)
Also: Soungrougrou
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q255093) · 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.