Ngounie
Ngounie is a mapped river in the YearMaps hydrographic index. River courses organise settlement, agriculture and frontier-making more durably than any political boundary, and this reach is indexed against the dams, lakes and cities within its catchment.
- Feature Class
- River
- Coordinates
- -1.57°, 10.90°
About Ngounie
The Ngounié River (also Ngunyé, French: Rivière Ngounié) is a river flowing through southwest-central Gabon. It is the last and second most important tributary of the Ogooué River, the first being the Ivindo River. It initially flows down from the Chaillu Mountains, along the border with Congo, and then turns northwest, flowing through the towns of Fougamou, Sindara and Mouila before flowing into the Ogooué.
Encyclopedic summary adapted from Wikipedia: Ngounié River (CC BY-SA 4.0).
Ngounie in Depth
Geography
The Ngounié River, with a basin area of about 33,100 square kilometres (12,800 sq mi), is the second largest tributary of the Ogooué River. It rises in the Chaillu Mountains. For 60 kilometres (37 mi), the river has a south and then west flow, and forms a border with Congo. At the Polo River confluence, it changes direction, heading northwest, before passing through three waterfalls. It then establishes a floodplain within a 220 kilometres (140 mi) valley between the Moukande Mountains and the Massif due Chaillu. After meandering for more than 400 kilometres (250 mi) on the valley floor, it joins the Ogooué prior to Lambaréné. Development in the floodplain occurs mostly in the areas between Lébamba and Mouila, and again from the Fougamou area to the Ogooué at Lambarene.
Climate
The climate is characterized by its equatorial humidity. The average temperature varies between 23–28 °C (73–82 °F). The relative humidity is commonly greater than 80%. Annual rainfall is measured around 2,000–2,200 millimetres (79–87 in). Wet seasons occur during September–December and March–May.
Sections adapted from Wikipedia: Ngounié River (CC BY-SA 4.0).
Ngounie: Key Facts
| Drainage basin | 33,100 km² |
|---|---|
| Source | Chaillu Mountains |
| Mouth | Ogooué River |
Facts from Wikidata Q3134829 (CC0).
Major River Dossiers
Hand-written studies of the great river systems of history.
Connected Reaches
Nearby watercourses in the same drainage network.
Water Bodies in the Catchment
Settlements Along the Reach
Hydraulic Infrastructure Nearby
Surrounding Terrain
Ngounie: Quick Answers
- Where is Ngounie?
- Ngounie is located in Gabon, at 1.5703° S, 10.8979° E.
- Are there dams on the Ngounie?
- No dam on the Ngounie is recorded in the YearMaps dam index, which covers major structures only.