HydroBASINS lev08 watershed · #1080026440
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 7 administrative regions across 2 countries : Bigene, Bula, Cacheu, Canghungo, Goudomp +2
Sub-basin area
1 307km²
Upstream area
5 946,7km²
Discharge
93,31m³/s
Mean elev.
17m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rio Cacheu273 km²
- Bassin de Rio Cacheu268 km²
7 dept-equivalent regions (GADM L2)
- BigeneCacheu · Guinea-Bissau584.9 km²44.9% of basin
- CacheuCacheu · Guinea-Bissau307.7 km²23.6% of basin
- Sao DomingosCacheu · Guinea-Bissau193.4 km²14.9% of basin
- BulaCacheu · Guinea-Bissau112.0 km²8.6% of basin
- 44.1 km²3.4% of basin
- ZiguinchorZiguinchor · Senegal38.6 km²3.0% of basin
- CanghungoCacheu · Guinea-Bissau21.3 km²1.6% of basin
5 intersecting protected areas
Wetland of International Importance (Ramsar Site)
359.12 km² overlap
Rio Cacheu Mangroves
IUCN Not ReportedNatural Park
352.62 km² overlap
Foret de Bafata
IUCN Not ReportedForest Reserve
13.76 km² overlap
Foret de Blaz
IUCN Not ReportedForest Reserve
8.24 km² overlap
AMP Kassa-Balantacounda
IUCN VIMarine Protected Area
2.94 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
369 distinct species · 1 129 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 22 interactions GloBI sur 2 types (connectance 7.3%, filtre Serrano α=0.2). 2 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°
26,6°C
Annual rain
1 440mm
Moisture idx (CMI)
-0,22
Runoff
559mm/an
PET
1 856mm
AET
833mm
Mean slope
0,7°
Water table
60cm
Forest
72%
Crops
17%
Urban
1%
Protected
30%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)