HydroBASINS lev08 watershed · #1080086370
Bassin de Oued Mderreg Narou
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 12 administrative regions : Ain Azel, Ain Lahdjar, Ain Oulmane, Bir Haddada, Guellal +7
Sub-basin area
660,3km²
Upstream area
660,3km²
Discharge
0,13m³/s
Mean elev.
1 032m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
12 dept-equivalent regions (GADM L2)
- 162.1 km²24.6% of basin
- 118.7 km²18.0% of basin
- 108.8 km²16.5% of basin
- 84.5 km²12.8% of basin
- 75.1 km²11.4% of basin
- 68.5 km²10.4% of basin
- 40.2 km²6.1% of basin
- 1.0 km²0.1% of basin
4 moreFull L2 list
- Guidjel0.7 km² · 0.1%
- Ain Azel0.3 km² · 0.1%
- Ain Lahdjar0.3 km² · 0.0%
- Tixter0.2 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
59 distinct species · 85 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 12 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 Mderreg Narou : 10 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 9 interactions GloBI sur 2 types (connectance 13.6%, filtre Serrano α=0.2). 2 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°
12,8°C
Annual rain
388mm
Moisture idx (CMI)
-0,67
Runoff
52mm/an
PET
1 168mm
AET
333mm
Mean slope
4,1°
Water table
353cm
Forest
1%
Crops
40%
Urban
10%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)