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River

Ogooué River

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

GabonRepublic of the CongoGabon and Republic of the CongoFlows into Gulf of Guinea1st longest in Gabon

Follow the riverMonth by month

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

In numbers

Length

850km

Average flow

4,800m³/s

Basin

222,700km²

Drop

460m

from 460 m to 0 m

Countries

2

The journey

From source to mouth

850 km of river and 23 stops on the way: 5 towns and cities on its banks, dams, bridges and the tributaries that feed it.

460 m0 m
Sourceat 460 m0 km
Franceville110,568 people69 km
chute de Doumé212 km
Lastoursville14,411 people239 km
Ivindo Rivertributary364 km
Chutes de Rooue405 km
Lac Menguègn1.6 km²575 km
Lac Ayèm5.2 km²578 km
Lac Ouongué0.8 km²682 km
Gulf of Guineaat 0 m850 km
0200400600850 km
  1. 0 kmSourceat 460 m
  2. 47 kmChute de Poubara
  3. 69 kmFranceville110,568 people
  4. 109 kmchutes Ndoli-Mayela
  5. 212 kmchute de Doumé
  6. 239 kmLastoursville14,411 people
  7. 364 kmIvindo Rivertributary
  8. 405 kmChutes de Rooue
  9. 549 kmNdjolé8,265 people
  10. 560 kmOyam30,100 people
  11. 575 kmLac Menguègn1.6 km²
  12. 578 kmLac Ayèm5.2 km²
  13. 639 kmLac Zilé8.0 km²
  14. 643 kmLambaréné46,605 people
  15. 651 kmLac Avengo0.7 km²
  16. 660 kmLac Kébanda1.9 km²
  17. 669 kmLac Ouombolia0.8 km²
  18. 677 kmLac Onangué249 km²
  19. 680 kmLac Nkénié0.8 km²
  20. 682 kmLac Ouongué0.8 km²
  21. 694 kmLac Nyondjé d'Amont7.0 km²
  22. 702 kmLac Nyondjé d'Aval2.3 km²
  23. 716 kmLac Avanga27 km²
  24. 741 kmLac Mandjé13 km²
  25. 850 kmGulf of Guineaat 0 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in Gabon

At the mouth it carries 4,805 m³/s on average: 1.9 Olympic pools every second. It drops from 460 m to 0 m, 0.5 m per kilometre on average. Its basin covers 222,700 km², about the size of GY. 868,000 people live in it. Highest water: from December to January; lowest: from August to September. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

  • FrancevilleLargest city on its banks · 110,568 people
  • M'Vengue El Hadj Omar Bongo Ondimba International Airport (MVB)Nearest airport with scheduled flights, 16 km from the cityCar hire at LBV airport (Libreville)Discover Cars · Affiliate link
  • On the water16 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • Kayak and canoe4 put-ins and rapids mapped (OpenStreetMap)
  • From June to AugustThe best months to visit

Ogooué River, month by month

Highest water: from December to January

Lowest water: from August to September. Best months to visit: from June to August.

7,600
26°150 mmJan
6,300
26°149 mmFeb
5,800
27°226 mmMar
6,200
27°216 mmApr
6,400
26°179 mmMay
5,200
25°21 mmJun
3,500
24°4 mmJul
2,100
24°8 mmAug
1,600
25°87 mmSep
4,000
26°278 mmOct
6,600
26°307 mmNov
7,600
26°186 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 1,600 m³/s in the lowest month to 7,600 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

Ogooué River: the basin in numbers

215,217 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.
  • 868,000people live in the basin
  • 4/km²people per km²
  • 448maverage altitude of the basin
  • 1,794mmof rain a year (basin average)
  • 24.3°Caverage air temperature
  • 11%protected areas
  • 0.3%covered by lakes

What covers the basin

  • 89% Forest
  • 1% Cropland
  • 2% 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

Ogooué River: what you find on the way

  • 1DamsBarrage de Grand Poubara
  • 1Weirs
  • 5WaterfallsChute de Poubara, Chutes de Leboka, Rapides Obongo and 2 more
  • 4RapidsRapides de Massoukou, Rapides de Vuku and 2 more
  • 5Boat rampsBoats to Port Gentil and 4 more
  • 11Ferry piersFerry to Makouké and 10 more

From OpenStreetMap, within 2.6 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Ogooué 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.

  • 4waterfalls on the riverCascadyas
  • 13lakes on its wayLakeyas

Waterfalls (4)

On the river, by Cascadyas

  1. Chute de Poubarakm 48
  2. chutes Ndoli-Mayelakm 112
  3. chute de Doumékm 220
  4. Chutes de Roouekm 419

Cascadyas is coming soonOpen Cascadyas ↗

Lakes and reservoirs (13)

Lakes it flows through, by Lakeyas

  1. Lac Ayèmkm 5985.2km²
  2. Lac Zilékm 6618.0km²
  3. Lac Kébandakm 6831.9km²
  4. Lac Onanguékm 700249km²
  5. Lac Nyondjé d'Amontkm 7187.0km²
  6. Lac Nyondjé d'Avalkm 7262.3km²
  7. Lac Avangakm 74127km²
  8. Lac Mandjékm 76613km²

5 more on LakeyasLakeyas is coming soonOpen Lakeyas ↗

From space

The source and the mouth, seen from orbit

Ogooué River: satellite view of the source
The source14 km across
Ogooué River: satellite view of the mouth
The mouth63 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

Ogooué River in pictures

Ogooué
Susi4 · CC BY-SA 3.0
Ogooue River (46256022452)
David Stanley from Nanaimo, Canada · CC BY 2.0
Guerrier Pahouin Yenvi (région de l'Ogooué)
Jean Audema (1864-1936) · Public domain
Guerriers Oudombo (région de l'Ogooué)
Jean Audema (1864-1936) · Public domain

Tributaries

Where it flows, and what flows into it

Tributaries (4)

Also: Ngounie River, Lolo River, Wagny River

Where these numbers come from

Name, length, placesWikidata (Q750021) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point 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, Lakeyas — 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