HydroBASINS lev08 watershed · #1081231560
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 : Kakamoeka, Mvouti
Sub-basin area
459,9km²
Upstream area
55 603,7km²
Discharge
886,61m³/s
Mean elev.
308m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Loubomo1107 km²
- Bassin de Louboumou417 km²
2 dept-equivalent regions (GADM L2)
- 274.5 km²60.0% of basin
- 183.3 km²40.0% of basin
1 intersecting protected areas
Réserve de biosphère de la Dimonika
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
241.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
75 distinct species · 234 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°
24,4°C
Annual rain
1 374mm
Moisture idx (CMI)
-0,06
Runoff
387mm/an
PET
1 466mm
AET
1 070mm
Mean slope
11,5°
Water table
494cm
Forest
95%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)