HydroBASINS lev08 watershed · #1080095270
Bassin de Oued Sidi Zarzour
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 : Biskra, Branis, Chetma, Djamora, El Haouch +3
Sub-basin area
244,9km²
Upstream area
3 149,2km²
Discharge
1,27m³/s
Mean elev.
301m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
8 dept-equivalent regions (GADM L2)
- 163.6 km²66.8% of basin
- 42.2 km²17.2% of basin
- 24.6 km²10.0% of basin
- 6.9 km²2.8% of basin
- TighargharBatna · Algeria6.3 km²2.6% of basin
- 0.6 km²0.2% of basin
- 0.4 km²0.2% of basin
- 0.2 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
444 distinct species · 840 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Sidi Zarzour : 18 espèces reliées par 31 interactions GloBI sur 5 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°
20,2°C
Annual rain
167mm
Moisture idx (CMI)
-0,89
Runoff
27mm/an
PET
1 477mm
AET
141mm
Mean slope
3,6°
Water table
794cm
Forest
0%
Crops
0%
Urban
8%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)