HydroBASINS lev08 watershed · #1080685930
Bassin de la Sirba
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 : Komandjoari, Say, Yagha
Sub-basin area
591,7km²
Upstream area
12 513,1km²
Discharge
3,26m³/s
Mean elev.
258m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Sirba597 km²
- Bassin · #1080695510441 km²
3 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger559.9 km²95.0% of basin
- 28.9 km²4.9% of basin
- 0.6 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 distinct species · 40 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°
28,7°C
Annual rain
552mm
Moisture idx (CMI)
-0,74
Runoff
18mm/an
PET
2 094mm
AET
464mm
Mean slope
0,8°
Water table
196cm
Forest
0%
Crops
40%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)