HydroBASINS lev08 watershed · #1080101250
Bassin · #1080101250
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 9 administrative regions : Ain El Hadjar, El Hassasna, El Kheither, Merhoum, Moulay Larbi +4
Sub-basin area
2 051,3km²
Upstream area
2 051,6km²
Discharge
0,4m³/s
Mean elev.
1 105m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 843.5 km²41.1% of basin
- 336.3 km²16.4% of basin
- 319.0 km²15.6% of basin
- El KheitherEl Bayadh · Algeria302.6 km²14.8% of basin
- 101.3 km²4.9% of basin
- 87.4 km²4.3% of basin
- 30.4 km²1.5% of basin
- 19.8 km²1.0% of basin
1 moreFull L2 list
- Tafissour10.6 km² · 0.5%
1 intersecting protected areas
Chott ech Chergui
IUCN Not ReportedWetland of International Importance (Ramsar Site)
451.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
77 distinct species · 211 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 · #1080101250 : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 26 interactions GloBI sur 4 types (connectance 6.4%, filtre Serrano α=0.2). 2 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°
14,4°C
Annual rain
293mm
Moisture idx (CMI)
-0,75
Runoff
7mm/an
PET
1 170mm
AET
253mm
Mean slope
0,8°
Water table
311cm
Forest
0%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)