HydroBASINS lev08 watershed · #1080923960
Bassin du Niger
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 : Ajaokuta, Bassa, Ofu
Sub-basin area
362,5km²
Upstream area
2 071 934,5km²
Discharge
5 791,17m³/s
Mean elev.
162m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ero1890 km²
- Bassin du Niger490 km²
3 dept-equivalent regions (GADM L2)
- 266.7 km²73.9% of basin
- 91.8 km²25.4% of basin
- 2.5 km²0.7% of basin
2 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
123 distinct species · 531 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 12 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 du Niger : 10 espèces reliées par 10 interactions GloBI sur 2 types (connectance 15.2%, 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°
26,5°C
Annual rain
1 234mm
Moisture idx (CMI)
-0,28
Runoff
539mm/an
PET
1 718mm
AET
1 004mm
Mean slope
4,7°
Water table
271cm
Forest
34%
Crops
41%
Urban
19%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)