HydroBASINS lev08 watershed · #1081232730
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 3 administrative regions : Madingou, Mfouati, Mouyondzi
Sub-basin area
472,6km²
Upstream area
16 336,1km²
Discharge
287,37m³/s
Mean elev.
260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Niari1687 km²
- Bassin de Bouenza584 km²
3 dept-equivalent regions (GADM L2)
- 265.6 km²56.5% of basin
- 198.8 km²42.3% of basin
- 6.0 km²1.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
71 distinct species · 83 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 5 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Niari : 5 espèces reliées par 4 interactions GloBI sur 2 types (connectance 40.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,9°C
Annual rain
1 237mm
Moisture idx (CMI)
-0,20
Runoff
421mm/an
PET
1 542mm
AET
1 044mm
Mean slope
4,7°
Water table
216cm
Forest
25%
Crops
1%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)