HydroBASINS lev08 watershed · #1080635020
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 across 2 countries : Ansongo, Tillabéry, Téra
Sub-basin area
1 595km²
Upstream area
541 106,8km²
Discharge
759,36m³/s
Mean elev.
259m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Niger823 km²
- Bassin du Niger310 km²
3 dept-equivalent regions (GADM L2)
- AnsongoGao · Mali984.1 km²61.9% of basin
- 387.9 km²24.4% of basin
- 217.3 km²13.7% of basin
3 intersecting protected areas
Kandadji
IUCN IVNature Reserve
566.50 km² overlap
Ansongo Giraffe Reserve
IUCN IVPartial Wildlife Reserve
558.20 km² overlap
Hippopotamus Sanctuary
IUCN IbStrict Nature Reserve
36.99 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
133 distinct species · 185 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 : 14 espèces + 3 bulles famille, 12 interactions GloBI documentées sur 3 types (connectance 8.8%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
29,0°C
Annual rain
299mm
Moisture idx (CMI)
-0,86
Runoff
30mm/an
PET
2 105mm
AET
249mm
Mean slope
0,5°
Water table
221cm
Forest
0%
Crops
19%
Urban
0%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)