HydroBASINS lev08 watershed · #1080893700
Bassin de Black Volta
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 : Bole, Kintampo North, Kintampo South, Nkoranza North, Techiman North +1
Sub-basin area
796,8km²
Upstream area
139 722,6km²
Discharge
342,98m³/s
Mean elev.
217m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Black Volta1974 km²
- Bassin de Tain20 km²
6 dept-equivalent regions (GADM L2)
- 344.9 km²43.5% of basin
- 174.8 km²22.0% of basin
- 130.7 km²16.5% of basin
- 72.9 km²9.2% of basin
- 70.0 km²8.8% of basin
- 0.2 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
227 distinct species · 819 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Black Volta : 17 espèces reliées par 17 interactions GloBI sur 3 types (connectance 7.4%, filtre Serrano α=0.2). 5 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 233mm
Moisture idx (CMI)
-0,28
Runoff
232mm/an
PET
1 720mm
AET
1 039mm
Mean slope
1,4°
Water table
180cm
Forest
92%
Crops
42%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)