HydroBASINS lev08 watershed · #1080085760
Bassin de Oued Lardjem
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 : Ammari, Ammi Moussa, Beni Lahcene, Bordj Bounaama, Bou Caid +19
Sub-basin area
1 377,6km²
Upstream area
1 377,6km²
Discharge
2,18m³/s
Mean elev.
673m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
24 dept-equivalent regions (GADM L2)
- 275.6 km²20.0% of basin
- Ouled Ben AbdelkaderChlef · Algeria181.2 km²13.2% of basin
- 141.9 km²10.3% of basin
- 133.9 km²9.7% of basin
- Sidi LantriTissemsilt · Algeria102.4 km²7.4% of basin
- El HadjadjChlef · Algeria96.9 km²7.0% of basin
- LarbaaTissemsilt · Algeria70.3 km²5.1% of basin
- 55.7 km²4.0% of basin
16 moreFull L2 list
- Bordj Bounaama52.5 km² · 3.8%
- Lazharia43.0 km² · 3.1%
- Ammari42.0 km² · 3.0%
- Oued Sly40.4 km² · 2.9%
- Beni Lahcene33.9 km² · 2.5%
- Sendjas29.8 km² · 2.2%
- Souk El Had26.0 km² · 1.9%
- Melaab21.9 km² · 1.6%
- Maacem19.2 km² · 1.4%
- Bou Caid3.7 km² · 0.3%
- Tissemsilt2.8 km² · 0.2%
- Boukadir2.1 km² · 0.2%
- Ammi Moussa1.4 km² · 0.1%
- Meghila0.7 km² · 0.0%
- Sidi Slimane0.3 km² · 0.0%
- Sebt0.2 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
105 distinct species · 170 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Lardjem : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 4 types (connectance 8.5%, filtre Serrano α=0.2). 5 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°
15,9°C
Annual rain
483mm
Moisture idx (CMI)
-0,55
Runoff
51mm/an
PET
1 065mm
AET
412mm
Mean slope
11,2°
Water table
659cm
Forest
8%
Crops
51%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)