HydroBASINS lev08 watershed · #1081103500
Bassin de Sangha
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 across 3 countries : Boumba et Ngoko, Nola, Ouesso
Sub-basin area
2 393,7km²
Upstream area
84 196,9km²
Discharge
851,14m³/s
Mean elev.
406m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Monguélé2646 km²
- Bassin de Mboki116 km²
3 dept-equivalent regions (GADM L2)
- 1373.9 km²57.7% of basin
- 815.8 km²34.2% of basin
- 193.4 km²8.1% of basin
5 intersecting protected areas
Sangha Trinational
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
881.81 km² overlap
Sangha-Nouabalé-Ndoki
IUCN Not ReportedWetland of International Importance (Ramsar Site)
803.72 km² overlap
Lobéké
IUCN IINational Park
661.23 km² overlap
Dzanga-Ndoki
IUCN IINational Park
193.48 km² overlap
Partie camerounaise du fleuve Sangha
IUCN Not ReportedWetland of International Importance (Ramsar Site)
68.72 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 577 distinct species · 8 683 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Sangha : 21 espèces reliées par 21 interactions GloBI sur 2 types (connectance 7.6%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,7°C
Annual rain
1 652mm
Moisture idx (CMI)
-0,03
Runoff
272mm/an
PET
1 697mm
AET
1 342mm
Mean slope
2,0°
Water table
114cm
Forest
100%
Crops
1%
Urban
0%
Protected
53%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)