HydroBASINS lev08 watershed · #1080623380
Bassin de Béli
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, Gourma-Rharous, Oudalan
Sub-basin area
892,1km²
Upstream area
33 941,3km²
Discharge
30,54m³/s
Mean elev.
280m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Béli198 km²
- Bassin de Béli168 km²
3 dept-equivalent regions (GADM L2)
- AnsongoGao · Mali610.6 km²68.7% of basin
- 266.8 km²30.0% of basin
- 11.5 km²1.3% of basin
1 intersecting protected areas
Sahel
IUCN IVSylvo-pastoral Reserve and Partial Wildlife Reserve
259.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
33 distinct species · 46 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
29,3°C
Annual rain
304mm
Moisture idx (CMI)
-0,86
Runoff
54mm/an
PET
2 129mm
AET
253mm
Mean slope
0,5°
Water table
216cm
Forest
0%
Crops
7%
Urban
0%
Protected
30%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)