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River

Nyanga River

600 km from source to mouth · Gabon and Republic of the Congo.

GabonRepublic of the CongoGabon and Republic of the CongoFlows into Atlantic Ocean2nd longest in Gabon

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

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.

682 m5 m
Sourceat 682 m0 km
Chutes Mougounda167 km
Tchibanga36,108 people444 km
Atlantic Oceanat 5 m600 km
0200400600 km
  1. 0 kmSourceat 682 m
  2. 167 kmChutes Mougounda
  3. 444 kmTchibanga36,108 people
  4. 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.

Read more on Wikipedia

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.

1,100
26°179 mmJan
930
26°192 mmFeb
1,000
27°226 mmMar
1,000
26°188 mmApr
830
25°114 mmMay
500
23°3 mmJun
280
22°1 mmJul
180
23°2 mmAug
190
24°21 mmSep
410
25°153 mmOct
930
26°299 mmNov
1,100
26°193 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

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.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 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

  1. Chutes Mougoundakm 152

Cascadyas is coming soonOpen Cascadyas ↗

Mountains at the source (1)

Within 15 km of the source, by Peakyas

  1. Mont Nguengue10 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Nyanga River: satellite view of the source
The source14 km across
Nyanga River: satellite view of the mouth
The mouth22 km across

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

Fleuve de la Nyanga au Gabon
Lalicorne25 · CC BY 4.0

Where these numbers come from

Name, length, placesWikidata (Q3086588) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCascadyas, 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.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit