HydroBASINS lev08 watershed · #2080000390
Bassin de נחל האלה
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 : Bethlehem, Hebron
Sub-basin area
1 023,4km²
Upstream area
1 023,5km²
Discharge
6,55m³/s
Mean elev.
309m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 228.2 km²22.3% of basin
- 25.4 km²2.5% of basin
22 intersecting protected areas
Sansan (harhava)
IUCN Not AssignedNature Reserve
9.13 km² overlap
Tel Lakhis Ve'Tel Marsha
IUCN Not AssignedNational Park
8.29 km² overlap
Givat At
IUCN Not AssignedNature Reserve
7.58 km² overlap
Horesh Adullam
IUCN Not AssignedNature Reserve
6.19 km² overlap
Bet Guvrin
IUCN Not AssignedNational Park
5.06 km² overlap
Emek He Ella
IUCN Not AssignedNational Park
3.93 km² overlap
Sansan
IUCN Not AssignedNature Reserve
3.77 km² overlap
Gevaot Gad
IUCN Not AssignedNature Reserve
3.54 km² overlap
Wadi el Quff
IUCN VNature Reserve
3.40 km² overlap
13 more protected areassorted by overlap area
Tel Zafit
IUCN Not AssignedNational Park
2.88 km² overlap
Gevaot Zafit
IUCN Not AssignedNature Reserve
2.77 km² overlap
Gevaot Gad Harhava
IUCN Not AssignedNature Reserve
1.39 km² overlap
Me'arot Hazan
IUCN Not AssignedNational Park
1.31 km² overlap
Horesh Adullam (harhava)
IUCN Not AssignedNature Reserve
1.14 km² overlap
Me'arot Samakh
IUCN Not AssignedNational Park
0.73 km² overlap
Tel Ashdod
IUCN Not AssignedNational Park
0.31 km² overlap
Tel Lakhish
IUCN Not AssignedNational Park
0.30 km² overlap
Shitta Malbina Emeq Ha-Ela
IUCN Not AssignedNature Reserve
0.22 km² overlap
Holot Nizzanim (harhava)
IUCN Not AssignedNature Reserve
0.20 km² overlap
Berekhat Zemorot
IUCN Not AssignedNature Reserve
0.18 km² overlap
Gva'ot Lahish
IUCN Not AssignedNational Park
0.14 km² overlap
AL Arqoub
IUCN VNature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 084 distinct species · 314 678 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 נחל האלה : 21 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 62 interactions GloBI sur 3 types (connectance 15.3%, filtre Serrano α=0.2). 8 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°
19,3°C
Annual rain
424mm
Moisture idx (CMI)
-0,69
Runoff
184mm/an
PET
1 381mm
AET
358mm
Mean slope
4,4°
Water table
222cm
Forest
7%
Crops
66%
Urban
25%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)