HydroBASINS lev08 watershed · #1080086800
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 3 administrative regions across 2 countries : Ouenza, Sakiet Sidi Youssef, Sidi Fredj
Sub-basin area
88,6km²
Upstream area
5 023,5km²
Discharge
6,54m³/s
Mean elev.
509m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Messiana423 km²
- Bassin de Oued Berka295 km²
3 dept-equivalent regions (GADM L2)
- Sidi FredjSouk Ahras · Algeria58.4 km²66.0% of basin
- 29.5 km²33.3% of basin
- 0.6 km²0.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 distinct species · 76 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 1 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 : 0 espèces reliées par 0 interaction GloBI sur 0 type (connectance 0.0%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
16,3°C
Annual rain
469mm
Moisture idx (CMI)
-0,66
Runoff
76mm/an
PET
1 374mm
AET
398mm
Mean slope
2,5°
Water table
285cm
Forest
0%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)