River
Dja River
523 km from source to mouth · Republic of the Congo and Cameroon.
Republic of the Congo and CameroonFlows into Ngoko4th longest in Republic of the Congo
In numbers
Length
523km
Average flow
800m³/s
Basin
80,000km²
Drop
359m
from 693 m to 334 m
Countries
2
The journey
From source to mouth
523 km of river and 1 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 693 m
- 613 kmChutes de Nki
- 926 kmNgokoat 334 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 800 m³/s on average: an Olympic pool every 3.1 seconds. It drops from 693 m to 334 m, 0.7 m per kilometre on average. Its basin covers 80,000 km², about the size of CZ. 439,000 people live in it. Highest water: from October to November; lowest: from January to February. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- OuessoLargest city on its banks · 40,667 people
- On the water15 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe1 put-ins and rapids mapped (OpenStreetMap)
- From December to February and JulyThe best months to visit
Dja River, month by month
Highest water: from October to November
Lowest water: from January to February. Best months to visit: from December to February and July.
From about 280 m³/s in the lowest month to 1,800 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
Dja River: the basin in numbers
74,854 km² of land send their water to this river. This is what lives on it.
- 439,000people live in the basin
- 6/km²people per km²
- 601maverage altitude of the basin
- 1,607mmof rain a year (basin average)
- 23.7°Caverage air temperature
- 18%protected areas
What covers the basin
- 93% Forest
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
Dja River: what you find on the way
- 9WaterfallsChutes de Mpouho, Chutes de Saa, Chutes de Nki and 6 more
- 1Rapids
- 2Boat ramps
- 13Ferry piers
From OpenStreetMap, within 2.3 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Dja River in our other atlases
What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.
1waterfall on the riverCascadyas
Waterfalls (1)
On the river, by Cascadyas
- Chutes de Nkikm 613
Cascadyas is coming soonOpen Cascadyas ↗
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
Dja River in pictures

Tributaries
Where it flows, and what flows into it
Tributaries (1)
Also: Ombéla River
In the same basin
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q1231996) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth 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 |
| Our other atlases | Cascadyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST |
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.