HydroBASINS lev08 watershed · #1080086430
Bassin de Oued Chlef
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 22 administrative regions : Abou El Hassen, Ain Merrane, Boukadir, Bouzeghaia, El Guettar +17
Sub-basin area
1 121,4km²
Upstream area
31 922,7km²
Discharge
45,34m³/s
Mean elev.
291m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Lardjem1378 km²
- Bassin de Oued Chlef901 km²
22 dept-equivalent regions (GADM L2)
- 217.2 km²19.4% of basin
- 184.3 km²16.4% of basin
- 142.1 km²12.7% of basin
- Ain MerraneChlef · Algeria91.2 km²8.1% of basin
- 79.9 km²7.1% of basin
- Merdja Sidi AbedRelizane · Algeria63.5 km²5.7% of basin
- 63.1 km²5.6% of basin
- Ouled FaresChlef · Algeria47.5 km²4.2% of basin
14 moreFull L2 list
- Ouarizane45.1 km² · 4.0%
- Moussadek44.8 km² · 4.0%
- Mazouna42.7 km² · 3.8%
- Oued Sly31.6 km² · 2.8%
- El Guettar23.5 km² · 2.1%
- Oued Rhiou20.4 km² · 1.8%
- Bouzeghaia11.9 km² · 1.1%
- El Oueldja10.0 km² · 0.9%
- Sidi M'Hamed Benali1.7 km² · 0.2%
- El Marsa0.5 km² · 0.0%
- Ouled Ben Abdelkader0.5 km² · 0.0%
- Telassa0.1 km² · 0.0%
- Abou El Hassen0.0 km² · 0.0%
- Mediouna0.0 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
115 distinct species · 293 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Oued Chlef : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 3 types (connectance 16.2%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
17,3°C
Annual rain
449mm
Moisture idx (CMI)
-0,56
Runoff
39mm/an
PET
1 014mm
AET
385mm
Mean slope
6,3°
Water table
526cm
Forest
1%
Crops
33%
Urban
9%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)