HydroBASINS lev08 watershed · #1080031110
Bassin · #1080031110
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 9 administrative regions across 2 countries : Ain El Assel, Aïn Draham, Berrihane, El Aioun, El Kala +4
Sub-basin area
446,4km²
Upstream area
446,4km²
Discharge
2,03m³/s
Mean elev.
97m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 194.7 km²43.6% of basin
- 86.0 km²19.3% of basin
- 47.8 km²10.7% of basin
- 31.6 km²7.1% of basin
- 23.7 km²5.3% of basin
- 19.8 km²4.4% of basin
- Ain El AsselEl Tarf · Algeria13.7 km²3.1% of basin
- 1.5 km²0.3% of basin
1 moreFull L2 list
- Aïn Draham0.5 km² · 0.1%
4 intersecting protected areas
El Kala
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
314.10 km² overlap
El Kala
IUCN IINational Park
314.10 km² overlap
Réserve Intégrale du Lac Tonga
IUCN Not ReportedWetland of International Importance (Ramsar Site)
52.83 km² overlap
Réserve Intégrale du Lac Mellah
IUCN Not ReportedWetland of International Importance (Ramsar Site)
21.87 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
378 distinct species · 799 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 · #1080031110 : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 4 types (connectance 8.1%, 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°
18,0°C
Annual rain
805mm
Moisture idx (CMI)
-0,34
Runoff
310mm/an
PET
1 215mm
AET
634mm
Mean slope
5,4°
Water table
361cm
Forest
98%
Crops
7%
Urban
4%
Protected
74%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)