HydroBASINS lev08 watershed · #1080031070
Bassin · #1080031070
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 7 administrative regions : Annaba, Chetaibi, El Bouni, El Marsa, Oued El Aneb +2
Sub-basin area
359,7km²
Upstream area
359,8km²
Discharge
2,86m³/s
Mean elev.
196m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 102.3 km²28.4% of basin
- El MarsaSkikda · Algeria61.9 km²17.2% of basin
- 48.7 km²13.5% of basin
- 48.0 km²13.3% of basin
- 43.3 km²12.0% of basin
- Oued El AnebAnnaba · Algeria20.0 km²5.6% of basin
- Sidi AmarAnnaba · Algeria2.1 km²0.6% of basin
1 intersecting protected areas
Complexe de zones humides de la plaine de Guerbès-Sanhadja
IUCN Not ReportedWetland of International Importance (Ramsar Site)
5.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
700 distinct species · 1 687 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 · #1080031070 : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 4 types (connectance 8.0%, filtre Serrano α=0.2). 11 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°
17,5°C
Annual rain
800mm
Moisture idx (CMI)
-0,29
Runoff
257mm/an
PET
1 120mm
AET
614mm
Mean slope
11,2°
Water table
519cm
Forest
84%
Crops
1%
Urban
19%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)