HydroBASINS lev08 watershed · #2080980620
Bassin de Wadi Ayun
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 1 administrative regions : Thumrait
Sub-basin area
1 390,9km²
Upstream area
27 821,9km²
Discharge
0m³/s
Mean elev.
301m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Wadi Ayun900 km²
- Bassin · #2080981640365 km²
2 intersecting protected areas
Najd Nature Reserve
IUCN VINature Reserve
900.26 km² overlap
Empty Quarter Desert Reserve
IUCN VINature Reserve
96.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
167 distinct species · 3 167 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 17 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 Wadi Ayun : 13 espèces reliées par 22 interactions GloBI sur 3 types (connectance 16.2%, filtre Serrano α=0.2). 4 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°
26,7°C
Annual rain
29mm
Moisture idx (CMI)
-0,98
Runoff
10mm/an
PET
1 945mm
AET
21mm
Mean slope
0,1°
Water table
66cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)