HydroBASINS lev08 watershed · #1080086670
Bassin de Oued Messiana
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 across 2 countries : Ain Zerga, El Meridj, Kalaat Senan, Ouenza, Sakiet Sidi Youssef +1
Sub-basin area
233,8km²
Upstream area
6 167,3km²
Discharge
7,99m³/s
Mean elev.
584m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Messiana910 km²
- Bassin de Oued Messiana89 km²
6 dept-equivalent regions (GADM L2)
- 160.9 km²68.8% of basin
- 24.7 km²10.6% of basin
- 23.8 km²10.2% of basin
- 18.1 km²7.7% of basin
- Sidi FredjSouk Ahras · Algeria6.0 km²2.6% of basin
- 0.3 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°
16,3°C
Annual rain
420mm
Moisture idx (CMI)
-0,69
Runoff
59mm/an
PET
1 376mm
AET
356mm
Mean slope
2,4°
Water table
197cm
Forest
0%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)