HydroBASINS lev08 watershed · #1080746210
Bassin de Koumba
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 : Gaoual, Lélouma
Sub-basin area
1 493,2km²
Upstream area
6 395km²
Discharge
90,79m³/s
Mean elev.
315m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de gnongongui1505 km²
- Bassin de Koumba229 km²
2 dept-equivalent regions (GADM L2)
- 1484.8 km²99.8% of basin
- 2.5 km²0.2% of basin
2 intersecting protected areas
Tomine Koumba
IUCN Not ReportedClassified Forest
40.88 km² overlap
Fello Digue
IUCN Not ReportedClassified Forest
32.66 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
59 distinct species · 187 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 4 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 Koumba : 4 espèces reliées par 2 interactions GloBI sur 2 types (connectance 33.3%, 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°
26,2°C
Annual rain
1 880mm
Moisture idx (CMI)
-0,02
Runoff
522mm/an
PET
1 914mm
AET
1 047mm
Mean slope
6,9°
Water table
341cm
Forest
74%
Crops
9%
Urban
1%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)