Ogooué River


The Ogooué, also known as the Nazareth River, some long, is the principal river of Gabon in west-central Africa and the fourth largest river in Africa by volume of discharge, trailing only the Congo, Kasai and Niger. Its watershed drains nearly the entire country of Gabon, with some tributaries reaching into the Republic of the Congo, Cameroon, and Equatorial Guinea.

Geography

Course

The source of the Ogooué River was discovered in 1894 by Mary Kingsley, an English explorer who travelled up the banks by steamboat and canoe. The river rises in the northwest of the Bateke Plateaux near Kengue, Republic of Congo. It runs northwest, and enters Gabon near Boumango. Poubara Falls are near Maulongo. From Lastoursville up to Ndjole, the Ogooué is non-navigable due to rapids. From the latter city, it runs west, and enters the Gulf of Guinea near Ozouri, south of Port Gentil. The Ogowe Delta is quite large, about 100 km long and 100 km wide.

Delta

A 30,000 ha site in the delta of the Ogooué River, including much of Mandji Island, has been designated an Important Bird Area by BirdLife International because it supports significant populations of many bird species.

Basin

The Ogooué Basin is, of which or 85 percent lies within Gabon.
Ogooué River Basin area by country:
Distance from river mouth:
StationRiver
kilometer
Altitude
Lambaréné18312
Ngounié*19613
Abanga*24220
Ndjolé28025
Okano*31440
N'golo*35972
Offoué*424142
Booué451161
Ivindo *481180
Dilo*503182
Lolo*512186
Lassio*535200
Lastoursville616226
Sébé*685242
Leyou*696243
Léconi*714248
Lékabi*725249
Lébombi*774270
Mpassa*802280
Baniaka*871426

*River in confluence
Gauging stations along the Ogooué River:

Discharge

Tributaries

The Ogowe River receives water of numerous tributaries including:
It mostly consists of undisturbed rainforest with some savanna grassland where the mid-year dry season is longest. It is home to a high biodiversity. All three species of African crocodile, for instance, occur in the river: the Nile crocodile, the dwarf crocodile, and the slender-snouted crocodile. It is also the type locality for the catfish Synodontis acanthoperca.

Economy

The Ogooué is navigable from Ndjole to the sea. It is used to bring wood to the Port Gentil Harbour.
The Ogowe Basin includes several major conservation reserves, including Lope National Park.
The catchment area has an average population density of 4 people per km². Towns along the river include Ayem, Adané, Loanda, Lambaréné, Ndjole, Booué, Kankan, Maulongo, Mboungou-Mbadouma, Ndoro, Lastoursville, Moanda, and Franceville near the Congo border.
Towns in Congo include Zanaga.
The first European explorer to trace the river to its source was Pierre Savorgnan de Brazza, who traveled in the area in the 1870s.