HydroBASINS lev08 watershed · #1080705970
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 2 administrative regions : Kollo, Say
Sub-basin area
237km²
Upstream area
704 479km²
Discharge
760,77m³/s
Mean elev.
208m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Gouroubi323 km²
- Bassin du Niger301 km²
2 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger129.8 km²55.0% of basin
- 106.3 km²45.0% of basin
1 intersecting protected areas
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
30.90 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
37 distinct species · 40 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 3 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 : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2).
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
599mm
Moisture idx (CMI)
-0,71
Runoff
64mm/an
PET
2 077mm
AET
504mm
Mean slope
0,5°
Water table
242cm
Forest
0%
Crops
57%
Urban
3%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)