HydroBASINS lev08 watershed · #1080084320
Bassin de Oued Mellah
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 13 administrative regions : Ain Larbi, Ain Sandel, Ain Soltane, Bouchekouf, Dahouara +8
Sub-basin area
554km²
Upstream area
554,1km²
Discharge
2,46m³/s
Mean elev.
634m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
13 dept-equivalent regions (GADM L2)
- Medjaz SfaGuelma · Algeria131.4 km²23.7% of basin
- Hammam N'BailGuelma · Algeria91.8 km²16.6% of basin
- Oued ChehamGuelma · Algeria89.1 km²16.1% of basin
- 75.1 km²13.6% of basin
- 67.3 km²12.1% of basin
- Ain SandelGuelma · Algeria49.2 km²8.9% of basin
- BouchekoufGuelma · Algeria29.3 km²5.3% of basin
- Hammam Ben SalahEl Tarf · Algeria10.5 km²1.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
68 distinct species · 114 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Mellah : 28 espèces reliées par 44 interactions GloBI sur 5 types (connectance 7.4%, filtre Serrano α=0.2). 7 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°
14,9°C
Annual rain
689mm
Moisture idx (CMI)
-0,45
Runoff
140mm/an
PET
1 267mm
AET
574mm
Mean slope
10,8°
Water table
499cm
Forest
43%
Crops
64%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)