HydroBASINS lev08 watershed · #1080089110
Bassin de Oued Nahr-Ouassel
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 5 administrative regions : Azziz, Bordj El Emir Abdelkader, Bouaiche, Chahbounia, Derrag
Sub-basin area
267km²
Upstream area
267,1km²
Discharge
1,09m³/s
Mean elev.
888m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 105.9 km²39.7% of basin
- 103.8 km²38.9% of basin
- 55.7 km²20.8% of basin
- Bordj El Emir AbdelkaderTissemsilt · Algeria0.9 km²0.3% of basin
- 0.8 km²0.3% of basin
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°
15,1°C
Annual rain
454mm
Moisture idx (CMI)
-0,60
Runoff
129mm/an
PET
1 136mm
AET
387mm
Mean slope
3,3°
Water table
290cm
Forest
0%
Crops
9%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)