HydroBASINS lev08 watershed · #2080982720
Bassin de وادي السليل
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 : Tathlith, Thar, Yadamah
Sub-basin area
253,4km²
Upstream area
253,6km²
Discharge
0,15m³/s
Mean elev.
1 574m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- YadamahNajran · Saudi Arabia190.4 km²75.4% of basin
- TharNajran · Saudi Arabia53.6 km²21.2% of basin
- 8.6 km²3.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
21,8°C
Annual rain
149mm
Moisture idx (CMI)
-0,92
Runoff
63mm/an
PET
1 831mm
AET
123mm
Mean slope
8,6°
Water table
686cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)