HydroBASINS lev08 watershed · #1080030260
Bassin de Oued Ghazouana
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 18 administrative regions : Ain Kebira, Bab El Assa, Beni Khellad, Beni Ouarsous, Dar Yaghmouracene +13
Sub-basin area
809,1km²
Upstream area
809,1km²
Discharge
0,05m³/s
Mean elev.
291m
Administrative coverage
18 dept-equivalent regions (GADM L2)
- 92.4 km²11.4% of basin
- 88.0 km²10.9% of basin
- 84.7 km²10.5% of basin
- Souk TletaTlemcen · Algeria81.4 km²10.1% of basin
- 64.4 km²8.0% of basin
- Dar YaghmouraceneTlemcen · Algeria58.7 km²7.3% of basin
- Beni KhelladTlemcen · Algeria51.3 km²6.3% of basin
- Msirda FouagaTlemcen · Algeria49.5 km²6.1% of basin
10 moreFull L2 list
- Bab El Assa37.0 km² · 4.6%
- Marsa Ben M'Hidi36.2 km² · 4.5%
- Oulhaca El Gheraba35.7 km² · 4.4%
- Ghazaouet27.5 km² · 3.4%
- Tianet25.5 km² · 3.2%
- Souani24.5 km² · 3.0%
- Beni Ouarsous19.5 km² · 2.4%
- Ain Kebira4.7 km² · 0.6%
- Sidi Ouriache|Tadmaya1.0 km² · 0.1%
- Hammam Boughrara0.6 km² · 0.1%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
244 distinct species · 501 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 49 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 Ghazouana : 37 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 5 types (connectance 6.8%, filtre Serrano α=0.2). 12 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°
17,1°C
Annual rain
390mm
Moisture idx (CMI)
-0,67
Runoff
21mm/an
PET
1 192mm
AET
334mm
Mean slope
9,9°
Water table
660cm
Forest
12%
Crops
54%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)