HydroBASINS lev08 watershed · #1080084660
Bassin de Oued Malah
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 24 administrative regions : Ain-Bessem, Azzizia, Beni Slimane, Bir Ben Laabed, Bir Ghbalou +19
Sub-basin area
1 125,3km²
Upstream area
1 125,3km²
Discharge
5,07m³/s
Mean elev.
785m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
24 dept-equivalent regions (GADM L2)
- 135.7 km²12.1% of basin
- 104.6 km²9.3% of basin
- 99.2 km²8.8% of basin
- 92.6 km²8.2% of basin
- 69.8 km²6.2% of basin
- 66.5 km²5.9% of basin
- 65.5 km²5.8% of basin
- 55.8 km²5.0% of basin
16 moreFull L2 list
- Mezrenna54.6 km² · 4.9%
- Souagui53.9 km² · 4.8%
- Sidi Errabia51.6 km² · 4.6%
- Bir Ghbalou49.8 km² · 4.4%
- Azzizia48.1 km² · 4.3%
- Mihoub46.7 km² · 4.1%
- Bouskene44.2 km² · 3.9%
- Ridane18.6 km² · 1.7%
- El Khabouzia18.1 km² · 1.6%
- Chellalet Ladhaoura12.9 km² · 1.1%
- Tafraout11.7 km² · 1.0%
- Megheraoua9.9 km² · 0.9%
- Sour El Ghouzlane7.4 km² · 0.7%
- Boucherahil5.4 km² · 0.5%
- Ain-Bessem2.7 km² · 0.2%
- Maamora0.1 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
58 distinct species · 99 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Malah : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 3 types (connectance 10.3%, filtre Serrano α=0.2). 3 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°
14,8°C
Annual rain
569mm
Moisture idx (CMI)
-0,50
Runoff
144mm/an
PET
1 137mm
AET
482mm
Mean slope
6,9°
Water table
477cm
Forest
1%
Crops
44%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)