HydroBASINS lev08 watershed · #1080030840
Bassin de Oued Soummam
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 35 administrative regions : Adekar, Ait R'Zine, Akbou, Akfadou, Amalou +30
Sub-basin area
1 063km²
Upstream area
9 125,2km²
Discharge
34,6m³/s
Mean elev.
471m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Ighzer el Guelâa357 km²
- Bassin de Oued Sahel344 km²
35 dept-equivalent regions (GADM L2)
- 98.9 km²9.3% of basin
- 68.9 km²6.5% of basin
- 66.6 km²6.3% of basin
- 61.4 km²5.8% of basin
- 60.4 km²5.7% of basin
- 47.5 km²4.5% of basin
- 46.9 km²4.4% of basin
- 45.6 km²4.3% of basin
27 moreFull L2 list
- Amalou43.5 km² · 4.1%
- Feraoun43.2 km² · 4.1%
- Tifra40.8 km² · 3.8%
- Sidi Said39.1 km² · 3.7%
- Chemini37.9 km² · 3.6%
- Akfadou37.3 km² · 3.5%
- Tala Hamza36.2 km² · 3.4%
- Toudja33.1 km² · 3.1%
- Smaoun32.9 km² · 3.1%
- Akbou32.3 km² · 3.0%
- Souk Oufella29.4 km² · 2.8%
- Chellata28.1 km² · 2.6%
- Beni Dejllil25.5 km² · 2.4%
- Tinedbar24.8 km² · 2.3%
- Taourit Ighil16.1 km² · 1.5%
- Bejaia14.5 km² · 1.4%
- Kendira11.1 km² · 1.0%
- Benimaouche8.7 km² · 0.8%
- Adekar7.4 km² · 0.7%
- Bousselam7.4 km² · 0.7%
- Beni-Mouhli5.9 km² · 0.6%
- Bouhamza5.8 km² · 0.5%
- Idjeur2.4 km² · 0.2%
- Bouzeguene2.3 km² · 0.2%
- Beni-Zikki0.7 km² · 0.1%
- Ait R'Zine0.4 km² · 0.0%
- Boukhlifa0.1 km² · 0.0%
1 intersecting protected areas
Vallée de l'oued Soummam
IUCN Not ReportedWetland of International Importance (Ramsar Site)
118.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
988 distinct species · 3 891 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Soummam : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 117 interactions GloBI sur 5 types (connectance 13.6%, filtre Serrano α=0.2). 15 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°
16,1°C
Annual rain
800mm
Moisture idx (CMI)
-0,25
Runoff
244mm/an
PET
1 075mm
AET
622mm
Mean slope
12,6°
Water table
517cm
Forest
65%
Crops
43%
Urban
23%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)