HydroBASINS lev08 watershed · #1080026610
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 2 administrative regions : Bignona, Ziguinchor
Sub-basin area
30,8km²
Upstream area
14 867,3km²
Discharge
85,79m³/s
Mean elev.
8m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Casamance835 km²
- Bassin de Marigot de Bignona744 km²
2 dept-equivalent regions (GADM L2)
- ZiguinchorZiguinchor · Senegal21.6 km²70.4% of basin
- 9.1 km²29.6% of basin
3 intersecting protected areas
AMP Kassa-Balantacounda
IUCN VIMarine Protected Area
3.88 km² overlap
Foret de Djibelor
IUCN Not ReportedForest Reserve
1.75 km² overlap
AMP Ufoyaal Kassa-Bandial
IUCN VIMarine Protected Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
246 distinct species · 732 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 4 types (connectance 6.7%, filtre Serrano α=0.2). 9 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°
26,7°C
Annual rain
1 270mm
Moisture idx (CMI)
-0,34
Runoff
470mm/an
PET
1 916mm
AET
801mm
Mean slope
0,3°
Water table
42cm
Forest
74%
Crops
12%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)