HydroBASINS lev08 watershed · #1080086680
Bassin de Chelif
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 25 administrative regions : Beni Dergoun, Beni Zentis, Dar Ben Abdelah, Djidiouia, El Guettar +20
Sub-basin area
1 616,4km²
Upstream area
35 990,9km²
Discharge
49,56m³/s
Mean elev.
320m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Rhiou2452 km²
- Bassin de Oued Chlef1121 km²
25 dept-equivalent regions (GADM L2)
- 163.7 km²10.1% of basin
- 135.4 km²8.4% of basin
- Ouled YaichRelizane · Algeria133.3 km²8.2% of basin
- 123.7 km²7.7% of basin
- Oued EssalemRelizane · Algeria104.8 km²6.5% of basin
- El H'MadnaRelizane · Algeria99.1 km²6.1% of basin
- 88.6 km²5.5% of basin
- Ouled MaalahMostaganem · Algeria86.3 km²5.3% of basin
17 moreFull L2 list
- Ouled Sidi Mihoub86.3 km² · 5.3%
- Hamri77.3 km² · 4.8%
- Beni Zentis71.3 km² · 4.4%
- El Hassi68.3 km² · 4.2%
- Sidi Khettab60.6 km² · 3.7%
- Sidi Ali47.0 km² · 2.9%
- Ouarizane42.9 km² · 2.7%
- Sidi Lazreg37.5 km² · 2.3%
- Oued Rhiou36.6 km² · 2.3%
- Mediouna34.3 km² · 2.1%
- Lahlef33.1 km² · 2.0%
- El Guettar29.7 km² · 1.8%
- Beni Dergoun21.5 km² · 1.3%
- Tazgait16.9 km² · 1.0%
- Oued El Djemaa10.6 km² · 0.7%
- Dar Ben Abdelah7.2 km² · 0.4%
- Had Echkalla0.6 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
138 distinct species · 471 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 Chelif : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 8 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°
17,1°C
Annual rain
431mm
Moisture idx (CMI)
-0,58
Runoff
38mm/an
PET
1 031mm
AET
370mm
Mean slope
5,3°
Water table
466cm
Forest
0%
Crops
49%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)