HydroBASINS lev08 watershed · #1080107500
Bassin de Oued Ertam
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 6 administrative regions : Besbes, Djamaa, M'Rara, Oum Laadham, Ras Miaad|Ouled Sassi +1
Sub-basin area
989,7km²
Upstream area
3 616,4km²
Discharge
1,43m³/s
Mean elev.
284m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080105310194 km²
- Bassin de Oued Ertam8 km²
6 dept-equivalent regions (GADM L2)
- Ras Miaad|Ouled SassiBiskra · Algeria615.5 km²62.2% of basin
- 225.5 km²22.8% of basin
- Oum LaadhamDjelfa · Algeria76.9 km²7.8% of basin
- 44.4 km²4.5% of basin
- 14.9 km²1.5% of basin
- BesbesBiskra · Algeria12.0 km²1.2% 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°
20,4°C
Annual rain
102mm
Moisture idx (CMI)
-0,94
Runoff
24mm/an
PET
1 590mm
AET
84mm
Mean slope
0,6°
Water table
590cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)