HydroBASINS lev08 watershed · #1080085290
Bassin de Oued Derder
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 12 administrative regions : Ain Lechiakh, Ain Soltane, Bir Ould Khelifa, Bordj El Emir Abdelkader, Bordj Emir Khaled +7
Sub-basin area
832km²
Upstream area
832km²
Discharge
3,86m³/s
Mean elev.
906m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
12 dept-equivalent regions (GADM L2)
- 255.3 km²30.7% of basin
- 231.5 km²27.8% of basin
- Bordj El Emir AbdelkaderTissemsilt · Algeria105.0 km²12.6% of basin
- El YoussoufiaTissemsilt · Algeria65.7 km²7.9% of basin
- 57.2 km²6.9% of basin
- Theniet El HadTissemsilt · Algeria34.1 km²4.1% of basin
- 29.0 km²3.5% of basin
- 27.0 km²3.2% of basin
4 moreFull L2 list
- Derrag9.7 km² · 1.2%
- Ain Soltane9.3 km² · 1.1%
- Ain Lechiakh8.1 km² · 1.0%
- Khemis Miliana0.1 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
57 distinct species · 83 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 5 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 Derder : 5 espèces reliées par 3 interactions GloBI sur 2 types (connectance 30.0%, 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°
15,0°C
Annual rain
589mm
Moisture idx (CMI)
-0,46
Runoff
147mm/an
PET
1 096mm
AET
499mm
Mean slope
10,4°
Water table
512cm
Forest
17%
Crops
79%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)