HydroBASINS lev08 watershed · #1080723590
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 : Boboye, Karimama, Say
Sub-basin area
30,5km²
Upstream area
1 247 892,4km²
Discharge
1 032,13m³/s
Mean elev.
177m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dallol Bosso503 km²
- Bassin de Dallol Bosso28 km²
3 dept-equivalent regions (GADM L2)
- 19.4 km²63.8% of basin
- 10.1 km²33.2% of basin
- SayTillabéry · Niger0.9 km²2.9% of basin
6 intersecting protected areas
Site Ramsar du Complexe W
IUCN IIWetland of International Importance (Ramsar Site)
18.57 km² overlap
Dosso
IUCN IVPartial Fauna Reserve
11.16 km² overlap
W (Benin)
IUCN IINational Park
2.19 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
2.19 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1.56 km² overlap
National Park
0.78 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
181 distinct species · 614 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 4 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°
29,1°C
Annual rain
650mm
Moisture idx (CMI)
-0,68
Runoff
75mm/an
PET
2 045mm
AET
547mm
Mean slope
0,5°
Water table
74cm
Forest
0%
Crops
33%
Urban
10%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)