HydroBASINS lev08 watershed · #1081179960
Bassin de Niémbi
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 4 administrative regions : Bendjé, Ndolou, Ogooué et des Lacs, Étimboué
Sub-basin area
997,5km²
Upstream area
997,5km²
Discharge
33,95m³/s
Mean elev.
68m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 542.0 km²54.6% of basin
- 418.0 km²42.1% of basin
- 23.4 km²2.4% of basin
- 9.7 km²1.0% of basin
1 intersecting protected areas
Bas Ogooue
IUCN Not ReportedWetland of International Importance (Ramsar Site)
19.99 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 distinct species · 5 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°
25,8°C
Annual rain
2 017mm
Moisture idx (CMI)
0,19
Runoff
1 051mm/an
PET
1 624mm
AET
1 343mm
Mean slope
3,2°
Water table
128cm
Forest
97%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)