HydroBASINS lev08 watershed · #1080086830
Bassin de Oued Messiana
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 Zerga, Boukhadra, Boulhaf Dyr, El Kouif, El Meridj +4
Sub-basin area
909,8km²
Upstream area
909,9km²
Discharge
1,32m³/s
Mean elev.
727m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 262.7 km²28.9% of basin
- 243.0 km²26.7% of basin
- 154.0 km²16.9% of basin
- 97.4 km²10.7% of basin
- 78.6 km²8.6% of basin
- 50.5 km²5.5% of basin
- 14.1 km²1.5% of basin
- 9.5 km²1.0% of basin
1 moreFull L2 list
- Boulhaf Dyr0.2 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 distinct species · 23 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 4 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 Messiana : 4 espèces reliées par 2 interactions GloBI sur 1 type (connectance 33.3%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
15,5°C
Annual rain
426mm
Moisture idx (CMI)
-0,68
Runoff
51mm/an
PET
1 333mm
AET
362mm
Mean slope
3,3°
Water table
331cm
Forest
2%
Crops
21%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)