HydroBASINS lev08 watershed · #1081175830
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 : Douya Onoye, Tsamba Mangotsi
Sub-basin area
1 793,2km²
Upstream area
18 457,9km²
Discharge
578,45m³/s
Mean elev.
224m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ngounié508 km²
- Bassin de Ngounié54 km²
2 dept-equivalent regions (GADM L2)
- 1060.5 km²59.4% of basin
- 724.6 km²40.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
444 distinct species · 3 265 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°
25,7°C
Annual rain
2 050mm
Moisture idx (CMI)
0,09
Runoff
1 093mm/an
PET
1 866mm
AET
1 514mm
Mean slope
4,3°
Water table
150cm
Forest
84%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)