HydroBASINS lev08 watershed · #1080672480
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 7 administrative regions across 2 countries : Fulladu West, Janjanbureh, Médina Yoro Foula, Niamina East, Niani +2
Sub-basin area
1 144,4km²
Upstream area
58 906,1km²
Discharge
160,15m³/s
Mean elev.
24m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Gambie1190 km²
- Bassin de Sandougou789 km²
7 dept-equivalent regions (GADM L2)
- 599.7 km²52.6% of basin
- 326.2 km²28.6% of basin
- 151.1 km²13.3% of basin
- 39.8 km²3.5% of basin
- 12.4 km²1.1% of basin
- Médina Yoro FoulaKolda · Senegal10.8 km²0.9% of basin
- 0.2 km²0.0% of basin
1 intersecting protected areas
River Gambia
IUCN IINational Park
12.81 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
801 distinct species · 72 773 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 20 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 5 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°
27,7°C
Annual rain
750mm
Moisture idx (CMI)
-0,64
Runoff
54mm/an
PET
2 060mm
AET
632mm
Mean slope
0,7°
Water table
86cm
Forest
1%
Crops
19%
Urban
3%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)