HydroBASINS lev08 watershed · #1080713040
Bassin de Casamance
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 6 administrative regions across 2 countries : Bounkiling, Farim, Goudomp, Kolda, Médina Yoro Foula +1
Sub-basin area
2 432,4km²
Upstream area
5 871,7km²
Discharge
23,98m³/s
Mean elev.
35m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080702230643 km²
- Bassin de la Casamance113 km²
6 dept-equivalent regions (GADM L2)
- 988.1 km²40.8% of basin
- 810.9 km²33.5% of basin
- 499.4 km²20.6% of basin
- Médina Yoro FoulaKolda · Senegal91.3 km²3.8% of basin
- 31.8 km²1.3% of basin
- BounkilingSédhiou · Senegal1.6 km²0.1% of basin
8 intersecting protected areas
Foret du Balmadou
IUCN Not ReportedForest Reserve
90.77 km² overlap
Foret de Sadiata
IUCN Not ReportedForest Reserve
83.23 km² overlap
Foret de Bari
IUCN Not ReportedForest Reserve
41.38 km² overlap
AMP Kassa-Balantacounda
IUCN VIMarine Protected Area
31.77 km² overlap
Foret de Diatouma
IUCN Not ReportedForest Reserve
13.00 km² overlap
Foret du Boudie
IUCN Not ReportedForest Reserve
6.13 km² overlap
Foret de Mahon
IUCN Not ReportedForest Reserve
0.47 km² overlap
Foret de Bakor
IUCN Not ReportedForest Reserve
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
642 distinct species · 5 125 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Casamance : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 28 interactions GloBI sur 3 types (connectance 5.6%, filtre Serrano α=0.2). 4 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°
27,0°C
Annual rain
1 088mm
Moisture idx (CMI)
-0,45
Runoff
246mm/an
PET
1 984mm
AET
792mm
Mean slope
0,6°
Water table
91cm
Forest
27%
Crops
7%
Urban
2%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)