HydroBASINS lev08 watershed · #1080729150
Bassin de Rio Cacheu
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 4 administrative regions : Bigene, Bissora, Bula, Nhacra
Sub-basin area
273km²
Upstream area
4 372,3km²
Discharge
66,65m³/s
Mean elev.
20m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Cacheu771 km²
- Bassin de Rio de Mansabandim491 km²
4 dept-equivalent regions (GADM L2)
- BulaCacheu · Guinea-Bissau92.0 km²33.8% of basin
- 85.3 km²31.4% of basin
- 70.1 km²25.8% of basin
- BigeneCacheu · Guinea-Bissau24.6 km²9.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
90 distinct species · 176 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Rio Cacheu : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 3 types (connectance 11.9%, filtre Serrano α=0.2). 8 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°
26,5°C
Annual rain
1 501mm
Moisture idx (CMI)
-0,16
Runoff
711mm/an
PET
1 787mm
AET
853mm
Mean slope
1,0°
Water table
73cm
Forest
84%
Crops
22%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)