HydroBASINS lev08 watershed · #2080987650
Bassin de وادي كهلان
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 6 administrative regions : Al Harjah, Badr Al Janub, Hubuna, Najran, Thar +1
Sub-basin area
2 967,5km²
Upstream area
2 967,6km²
Discharge
3,56m³/s
Mean elev.
1 942m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- Badr Al JanubNajran · Saudi Arabia1232.4 km²41.7% of basin
- HubunaNajran · Saudi Arabia709.7 km²24.0% of basin
- 628.2 km²21.2% of basin
- NajranNajran · Saudi Arabia151.9 km²5.1% of basin
- 136.5 km²4.6% of basin
- TharNajran · Saudi Arabia99.3 km²3.4% of basin
2 intersecting protected areas
Imam Faisal bin Turki Royal Reserve
IUCN Not ReportedRoyal Reserve
182.02 km² overlap
Al Jazm National Park
IUCN IINational Park
35.81 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
21 distinct species · 31 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 3 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 كهلان : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, 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°
19,4°C
Annual rain
188mm
Moisture idx (CMI)
-0,89
Runoff
47mm/an
PET
1 709mm
AET
157mm
Mean slope
9,8°
Water table
737cm
Forest
0%
Crops
0%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)