HydroBASINS lev08 watershed · #2080083790
Bassin de وادي سمر
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 2 administrative regions : Umluj, Yanbu
Sub-basin area
722,3km²
Upstream area
722,3km²
Discharge
0,01m³/s
Mean elev.
105m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- UmlujTabuk · Saudi Arabia689.9 km²95.7% of basin
- YanbuAl Madinah · Saudi Arabia6.2 km²0.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
718 distinct species · 1 666 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 وادي سمر : 17 espèces reliées par 19 interactions GloBI sur 2 types (connectance 10.0%, 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°
25,1°C
Annual rain
53mm
Moisture idx (CMI)
-0,97
Runoff
3mm/an
PET
1 648mm
AET
42mm
Mean slope
2,4°
Water table
438cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)