HydroBASINS lev08 watershed · #1080684620
Bassin de Gambie
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 : Kédougou, Tambacounda
Sub-basin area
1 163,7km²
Upstream area
21 362,6km²
Discharge
137,1m³/s
Mean elev.
51m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Niokolo Koba700 km²
- Bassin de Gambie507 km²
2 dept-equivalent regions (GADM L2)
- TambacoundaTambacounda · Senegal1157.8 km²99.9% of basin
- 1.5 km²0.1% of basin
4 intersecting protected areas
Niokolo-Koba National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1018.06 km² overlap
Parc national du Niokolo-Koba
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1018.06 km² overlap
National Park
1006.04 km² overlap
Foret de Diambour
IUCN Not ReportedForest Reserve
31.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 124 distinct species · 52 308 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Gambie : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 12 interactions GloBI sur 3 types (connectance 7.8%, 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°
28,0°C
Annual rain
915mm
Moisture idx (CMI)
-0,54
Runoff
103mm/an
PET
2 002mm
AET
756mm
Mean slope
0,7°
Water table
89cm
Forest
45%
Crops
2%
Urban
0%
Protected
91%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)