HydroBASINS lev08 watershed · #1080706760
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
12,5km²
Upstream area
708 953,5km²
Discharge
766,23m³/s
Mean elev.
189m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Diamangou4462 km²
- Bassin du Niger237 km²
2 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger10.3 km²83.1% of basin
- 2.1 km²16.9% of basin
1 intersecting protected areas
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
12.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
14 distinct species · 16 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, 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°
29,1°C
Annual rain
605mm
Moisture idx (CMI)
-0,71
Runoff
70mm/an
PET
2 076mm
AET
510mm
Mean slope
0,6°
Water table
144cm
Forest
0%
Crops
54%
Urban
9%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)