River
Nyanga River
600 km from source to mouth · Gabon and Republic of the Congo.
Gabon and Republic of the CongoFlows into Atlantic Ocean2nd longest in Gabon
In numbers
Length
600km
Average flow
610m³/s
Basin
20,060km²
Drop
677m
from 682 m to 5 m
Countries
2
The journey
From source to mouth
600 km of river and 2 stops on the way: 1 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 682 m
- 167 kmChutes Mougounda
- 444 kmTchibanga36,108 people
- 600 kmAtlantic Oceanat 5 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Central Africa
At the mouth it carries 606 m³/s on average: an Olympic pool every 4.1 seconds. It drops from 682 m to 5 m, 1.1 m per kilometre on average. Its basin covers 20,060 km², about the size of SI. 90,000 people live in it. Highest water: from December to January and from March to April; lowest: from July to October. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- TchibangaLargest city on its banks · 36,108 people
- Antonio Agostinho-Neto International Airport (PNR)Nearest airport with scheduled flights, 232 km from the cityCar hire at POG airport (Port Gentil)Discover Cars · Affiliate link↗
- On the water2 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- Kayak and canoe20 put-ins and rapids mapped (OpenStreetMap)
- From June to SeptemberThe best months to visit
Nyanga River, month by month
Highest water: from December to January and from March to April
Lowest water: from July to October. Best months to visit: from June to September.
From about 180 m³/s in the lowest month to 1,100 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
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The basin
Nyanga River: the basin in numbers
25,075 km² of land send their water to this river. This is what lives on it.
- 90,000people live in the basin
- 4/km²people per km²
- 314maverage altitude of the basin
- 1,687mmof rain a year (basin average)
- 24.5°Caverage air temperature
- 19%protected areas
- 0.2%covered by lakes
What covers the basin
- 84% Forest
- 1% Cropland
- 4% 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
Nyanga River: what you find on the way
- 3WaterfallsRapides de Nouvélou, Chutes de Mougounda, Chutes de Dimani
- 20RapidsRapides de Mafoubou, Rapides Ilintaima, Rapides d'Igotchi and 17 more
- 2Ferry piers
From OpenStreetMap, within 2.0 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Nyanga 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
1mountain at the sourcePeakyas
Waterfalls (1)
On the river, by Cascadyas
- Chutes Mougoundakm 152
Cascadyas is coming soonOpen Cascadyas ↗
Mountains at the source (1)
Within 15 km of the source, by Peakyas
- Mont Nguengue10 km away
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
Nyanga River in pictures

Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q3086588) · 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, Peakyas — 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.