HydroBASINS lev08 watershed · #1080713590
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 3 administrative regions : Bignona, Sédhiou, Ziguinchor
Sub-basin area
18,6km²
Upstream area
8 325,9km²
Discharge
52,64m³/s
Mean elev.
9m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Casamance491 km²
- Bassin de Casamance374 km²
3 dept-equivalent regions (GADM L2)
- ZiguinchorZiguinchor · Senegal17.5 km²94.7% of basin
- 0.7 km²3.8% of basin
- 0.3 km²1.6% of basin
2 intersecting protected areas
AMP Kassa-Balantacounda
IUCN VIMarine Protected Area
17.42 km² overlap
AMP Niamone-Kalounayes
IUCN VIMarine Protected Area
1.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
60 distinct species · 145 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 2 types (connectance 11.7%, 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°
26,8°C
Annual rain
1 193mm
Moisture idx (CMI)
-0,38
Runoff
406mm/an
PET
1 926mm
AET
788mm
Mean slope
0,5°
Water table
55cm
Forest
60%
Crops
17%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)