HydroBASINS lev08 watershed · #1080084630
Bassin de Oued Isser
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 15 administrative regions : Aissaouia, Baata, Beni Slimane, Boucherahil, Bougara +10
Sub-basin area
524,8km²
Upstream area
1 421,8km²
Discharge
6,22m³/s
Mean elev.
729m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued El Besbes240 km²
- Bassin de Oued Isser89 km²
15 dept-equivalent regions (GADM L2)
- 140.0 km²26.7% of basin
- 90.8 km²17.3% of basin
- 76.7 km²14.6% of basin
- 55.9 km²10.7% of basin
- 53.7 km²10.2% of basin
- 53.1 km²10.1% of basin
- 20.0 km²3.8% of basin
- 15.5 km²3.0% of basin
7 moreFull L2 list
- Mezrenna12.5 km² · 2.4%
- Ouled Brahim5.6 km² · 1.1%
- Beni Slimane0.4 km² · 0.1%
- Bougara0.3 km² · 0.1%
- Guerrouma0.1 km² · 0.0%
- Sidi Errabia0.1 km² · 0.0%
- Boukram0.1 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
51 distinct species · 115 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Isser : 18 espèces reliées par 23 interactions GloBI sur 6 types (connectance 11.0%, filtre Serrano α=0.2). 3 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
662mm
Moisture idx (CMI)
-0,40
Runoff
154mm/an
PET
1 103mm
AET
554mm
Mean slope
10,2°
Water table
586cm
Forest
12%
Crops
53%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)