HydroBASINS lev08 watershed · #1080119350
Bassin de Oued N'sa
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 4 administrative regions : El Allia, El Guerrarra, El Hadjira, N'Goussa
Sub-basin area
514,4km²
Upstream area
7 047,2km²
Discharge
1m³/s
Mean elev.
205m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued N'sa868 km²
- Bassin de Oued N'sa430 km²
4 dept-equivalent regions (GADM L2)
- 272.3 km²53.0% of basin
- 238.1 km²46.3% of basin
- El HadjiraOuargla · Algeria3.2 km²0.6% of basin
- 0.4 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 2 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°
21,6°C
Annual rain
58mm
Moisture idx (CMI)
-0,97
Runoff
15mm/an
PET
1 694mm
AET
47mm
Mean slope
0,7°
Water table
453cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)