HydroBASINS lev08 watershed · #1080094620
Bassin de Oued Ain Errich
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 8 administrative regions : Ain El Melh, Ain Errich, Ain Fares, Bir Foda, Faidh El Botma +3
Sub-basin area
1 505,4km²
Upstream area
1 505,4km²
Discharge
0m³/s
Mean elev.
1 077m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
8 dept-equivalent regions (GADM L2)
- Ain ErrichM'Sila · Algeria524.2 km²34.8% of basin
- Faidh El BotmaDjelfa · Algeria392.7 km²26.1% of basin
- 373.1 km²24.8% of basin
- Sidi M'HamedM'Sila · Algeria156.7 km²10.4% of basin
- Ain El MelhM'Sila · Algeria39.2 km²2.6% of basin
- 14.1 km²0.9% of basin
- 5.0 km²0.3% of basin
- Ras Miaad|Ouled SassiBiskra · Algeria0.3 km²0.0% of basin
1 intersecting protected areas
Atlas Saharien
IUCN Not ApplicableCultural Park
1505.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
20 distinct species · 34 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 Ain Errich : 8 espèces reliées par 6 interactions GloBI sur 1 type (connectance 21.4%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
14,1°C
Annual rain
266mm
Moisture idx (CMI)
-0,80
Runoff
33mm/an
PET
1 309mm
AET
228mm
Mean slope
2,2°
Water table
697cm
Forest
0%
Crops
0%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)