Republic of the Congo Gabon
|Confluence of||Source streams south of Zanaga ( Lékoumou department )
|muzzle||south of Port-Gentil in the Gulf of Guinea
|Height difference||approx. 840 m|
|Bottom slope||approx. 0.7 ‰|
|length||approx. 1200 km|
|Catchment area||223,856 km²|
| Discharge at the Lambaréné
A Eo gauge : 203,000 km²
|1600 m³ / s
4700 m³ / s
23.2 l / (s km²)
9400 m³ / s
|Left tributaries||Ngounié , Ikoy, Ofoue, Lolo , Leyou|
|Right tributaries||Abanga , Okano , Ivindo , Sébé, Deconi (Lékoni), Mpassa|
|Big cities||Port Gentil|
Ogooué catchment area
Its catchment area covers almost all of Gabon; some tributaries extend to Cameroon and Equatorial Guinea . The 223,856 km² catchment area of the Ogooué is predominantly covered by tropical rainforest and grassland.
The Ogooué rises near Kengue in the northwest of the Batéké plateau in the Republic of the Congo. At Boumango he crosses the border to Gabon, where the regions of Haut-Ogooué , Ogooué-Lolo , Ogooué-Ivindo , Moyen-Ogooué and Ogooué-Maritime are named after him. At Maulongo , the Poubara Falls lie on the river. There are rapids from Lastoursville to Ndjolé , which is why the river is only navigable from Ndjolé to the sea. Via Lambaréné , the Ogooué reaches its confluence with the Gulf of Guinea south of Port-Gentil , where it forms a delta .
Flora and fauna
About 325 known fish species live in the catchment area. Around a third of them are endemic .
The mean discharge of the Ogooué at Lambaréné is 4320 m³ / s.
- Gabon's hydrology. (PDF) ird.fr (French) accessed on June 25, 2018
- A Freshwater Conservation and Management Blueprint for the Ogooué Basin . (PDF) conservationgateway.org (English) accessed on June 25, 2018
- Hydrology in Gabon. (PDF) hydrosciences.fr (French) accessed on June 26, 2018