HydroBASINS lev08 watershed · #1081157500
Bassin de Ngounié
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Ogooué et des Lacs, Tsamba Mangotsi
Sub-basin area
1 475,9km²
Upstream area
32 636,7km²
Discharge
1 002,4m³/s
Mean elev.
107m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ngounié2147 km²
- Bassin de Ikoy499 km²
2 dept-equivalent regions (GADM L2)
- 1243.1 km²84.6% of basin
- 226.2 km²15.4% of basin
1 intersecting protected areas
Bas Ogooue
IUCN Not ReportedWetland of International Importance (Ramsar Site)
1244.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 145 distinct species · 14 576 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
25,9°C
Annual rain
2 063mm
Moisture idx (CMI)
0,21
Runoff
866mm/an
PET
1 637mm
AET
1 378mm
Mean slope
3,7°
Water table
180cm
Forest
88%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)