HydroBASINS lev08 watershed · #1080096910
Bassin de Oued el 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 12 administrative regions : Aflou, Ain Sidi Ali, Brida, El Beidha, El Ghicha +7
Sub-basin area
1 932,9km²
Upstream area
1 932,9km²
Discharge
0,63m³/s
Mean elev.
1 276m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
12 dept-equivalent regions (GADM L2)
- Gueltat Sidi SaadLaghouat · Algeria588.5 km²30.5% of basin
- 291.2 km²15.1% of basin
- 283.9 km²14.7% of basin
- 260.9 km²13.5% of basin
- Sidi BouzidLaghouat · Algeria244.9 km²12.7% of basin
- 182.2 km²9.4% of basin
- Hadj MechriLaghouat · Algeria65.9 km²3.4% of basin
- Ain Sidi AliLaghouat · Algeria6.5 km²0.3% of basin
4 moreFull L2 list
- El Ghicha4.4 km² · 0.2%
- Oued M'Zi3.9 km² · 0.2%
- Sidi Tifour0.2 km² · 0.0%
- Taouala0.1 km² · 0.0%
1 intersecting protected areas
Atlas Saharien
IUCN Not ApplicableCultural Park
1932.46 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
368 distinct species · 652 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 el Malah : 20 espèces reliées par 53 interactions GloBI sur 5 types (connectance 11.4%, filtre Serrano α=0.2). 11 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°
13,7°C
Annual rain
301mm
Moisture idx (CMI)
-0,75
Runoff
19mm/an
PET
1 227mm
AET
259mm
Mean slope
2,8°
Water table
867cm
Forest
0%
Crops
0%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)