HydroBASINS lev08 watershed · #1080099750
Bassin de Oued el Ma
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 10 administrative regions : Bouhmama, El Feidh, El Oueldja, Hamraia, Inoughissen +5
Sub-basin area
1 423,2km²
Upstream area
1 423,2km²
Discharge
0,14m³/s
Mean elev.
625m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 424.0 km²29.8% of basin
- 363.3 km²25.5% of basin
- 300.1 km²21.1% of basin
- 145.4 km²10.2% of basin
- Zeribet El OuedBiskra · Algeria97.7 km²6.9% of basin
- El OueldjaKhenchela · Algeria37.7 km²2.6% of basin
- 24.1 km²1.7% of basin
- 18.5 km²1.3% of basin
2 moreFull L2 list
- Inoughissen12.2 km² · 0.9%
- Bouhmama0.0 km² · 0.0%
1 intersecting protected areas
Chott Melrhir
IUCN Not ReportedWetland of International Importance (Ramsar Site)
400.79 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
52 distinct species · 75 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 el Ma : 11 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 12 interactions GloBI sur 3 types (connectance 15.4%, filtre Serrano α=0.2). 2 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°
17,4°C
Annual rain
244mm
Moisture idx (CMI)
-0,81
Runoff
34mm/an
PET
1 404mm
AET
207mm
Mean slope
4,7°
Water table
547cm
Forest
8%
Crops
16%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)