HydroBASINS lev08 watershed · #1080030680
Bassin de Oued Chiffa
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 58 administrative regions : Ahmer El Ain, Ain Benian, Ain Romana, Ain Soltane, Ain Tagourait +53
Sub-basin area
2 038,6km²
Upstream area
2 038,7km²
Discharge
11,54m³/s
Mean elev.
390m
Administrative coverage
58 dept-equivalent regions (GADM L2)
- 128.9 km²6.3% of basin
- 106.6 km²5.2% of basin
- Ain RomanaBlida · Algeria100.5 km²4.9% of basin
- 98.3 km²4.8% of basin
- 88.2 km²4.3% of basin
- 81.8 km²4.0% of basin
- 73.5 km²3.6% of basin
- 71.4 km²3.5% of basin
50 moreFull L2 list
- Hammam Righa69.3 km² · 3.4%
- Bouaarfa68.1 km² · 3.3%
- Bouinan63.4 km² · 3.1%
- Hattatba63.3 km² · 3.1%
- Bourkika60.2 km² · 3.0%
- Oued Djer59.2 km² · 2.9%
- El-Affroun56.8 km² · 2.8%
- Oued El Alleug55.5 km² · 2.7%
- Ahmer El Ain55.2 km² · 2.7%
- Sidi Rached54.3 km² · 2.7%
- Blida53.2 km² · 2.6%
- Boufarik51.7 km² · 2.5%
- Chiffa47.3 km² · 2.3%
- Benkhelil43.6 km² · 2.1%
- Medea38.2 km² · 1.9%
- Kolea37.8 km² · 1.9%
- Douera34.1 km² · 1.7%
- Chrea33.7 km² · 1.7%
- Ain Benian30.7 km² · 1.5%
- Chaiba27.7 km² · 1.4%
- Chebli27.6 km² · 1.4%
- Soumaa27.4 km² · 1.3%
- Mahelma25.4 km² · 1.2%
- Beni-Tamou24.7 km² · 1.2%
- Draa Smar20.5 km² · 1.0%
- Tessala-El-Merdja20.3 km² · 1.0%
- Gherouaou18.2 km² · 0.9%
- Oued Harbil16.9 km² · 0.8%
- Ouled Chebel15.8 km² · 0.8%
- Beni Merad15.4 km² · 0.8%
- Ouamri15.0 km² · 0.7%
- Ouled Yaich13.5 km² · 0.7%
- El Oumaria10.1 km² · 0.5%
- Douaouda7.0 km² · 0.3%
- Zeralda6.6 km² · 0.3%
- Miliana3.5 km² · 0.2%
- Birtouta3.1 km² · 0.2%
- Ain Tagourait2.8 km² · 0.1%
- Djendel2.5 km² · 0.1%
- Ben Chicao1.8 km² · 0.1%
- Ben Allal1.5 km² · 0.1%
- Bou Ismail1.1 km² · 0.1%
- Ouled Brahim1.1 km² · 0.1%
- Hadjout1.0 km² · 0.0%
- Merad1.0 km² · 0.0%
- Ain Soltane0.8 km² · 0.0%
- Khraicia0.6 km² · 0.0%
- Fouka0.4 km² · 0.0%
- Tipaza0.3 km² · 0.0%
- Hammam Melouane0.1 km² · 0.0%
2 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 315 distinct species · 8 219 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Chiffa : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 4 types (connectance 7.3%, filtre Serrano α=0.2). 10 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°
16,9°C
Annual rain
710mm
Moisture idx (CMI)
-0,34
Runoff
167mm/an
PET
1 075mm
AET
586mm
Mean slope
8,4°
Water table
444cm
Forest
32%
Crops
64%
Urban
30%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)