HydroBASINS lev08 watershed · #1081221850
Bassin de Niari
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 : Loudima, Louvakou (Loubomo)
Sub-basin area
483,2km²
Upstream area
483,2km²
Discharge
4,66m³/s
Mean elev.
162m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 465.3 km²96.7% of basin
- 15.7 km²3.3% of basin
1 intersecting protected areas
Vallée du Niari
IUCN Not ReportedWetland of International Importance (Ramsar Site)
9.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 2 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°
25,4°C
Annual rain
1 242mm
Moisture idx (CMI)
-0,20
Runoff
304mm/an
PET
1 552mm
AET
1 050mm
Mean slope
1,5°
Water table
112cm
Forest
23%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)