HydroBASINS lev08 watershed · #1080620570
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
198,3km²
Upstream area
3 597,2km²
Discharge
4,95m³/s
Mean elev.
262m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080617570774 km²
- Bassin · #1080617580337 km²
3 dept-equivalent regions (GADM L2)
- 166.4 km²84.2% of basin
- AnsongoGao · Mali19.6 km²9.9% of basin
- 11.6 km²5.9% of basin
1 intersecting protected areas
Sahel
IUCN IVSylvo-pastoral Reserve and Partial Wildlife Reserve
13.50 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 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°
29,5°C
Annual rain
309mm
Moisture idx (CMI)
-0,86
Runoff
49mm/an
PET
2 135mm
AET
258mm
Mean slope
0,1°
Water table
85cm
Forest
0%
Crops
8%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)