HydroBASINS lev08 watershed · #2080000670
Bassin de نهر الأولي
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 21 administrative regions : Akkar, Aley, Baabda, Baalbeck, Batroun +13
Sub-basin area
3 082,3km²
Upstream area
3 082,3km²
Discharge
0,01m³/s
Mean elev.
786m
Administrative coverage
21 dept-equivalent regions (GADM L2)
- 465.8 km²15.1% of basin
- 409.0 km²13.3% of basin
- 339.4 km²11.0% of basin
- 265.2 km²8.6% of basin
- 253.1 km²8.2% of basin
- 247.8 km²8.0% of basin
- 246.9 km²8.0% of basin
- Aley243.8 km²7.9% of basin
13 moreFull L2 list
30 intersecting protected areas
Shouf Biosphere Reserve
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
150.79 km² overlap
Jabal Moussa Biosphere Reserve
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
64.78 km² overlap
Jabal Al Rihane Biosphere Reserve
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
54.26 km² overlap
Akoura
IUCN VIHima
47.34 km² overlap
Nature Reserve
45.33 km² overlap
Protected forest
14.68 km² overlap
Deir el Nouriyeh cliffs of Ras Chekaa
IUCN Not ReportedWetland of International Importance (Ramsar Site)
9.92 km² overlap
West Baalbeck
IUCN VIHima
9.53 km² overlap
Anfeh
IUCN VIHima
7.31 km² overlap
21 more protected areassorted by overlap area
Qnat
IUCN IVProtected forest
4.71 km² overlap
Hadath el Jebbeh
IUCN IVProtected forest
3.06 km² overlap
Nature Reserve
1.95 km² overlap
Tannourine Cedars
IUCN IVProtected forest
1.90 km² overlap
Bkessine
IUCN IVProtected forest
1.84 km² overlap
Palm Islands Nature Reserve
IUCN IbNature Reserve
1.83 km² overlap
Ras el Matn
IUCN VIHima
1.67 km² overlap
Roum
IUCN VIHima
0.86 km² overlap
Jabal Moussa
IUCN IVProtected forest
0.82 km² overlap
Bentael Nature Reserve
IUCN IbNature Reserve
0.75 km² overlap
Qaytouleh
IUCN VIHima
0.68 km² overlap
Tarshish
IUCN VIHima
0.65 km² overlap
Hammana
IUCN VIHima
0.60 km² overlap
Mtein
IUCN IVProtected forest
0.43 km² overlap
Kherbet Qanafar
IUCN VIHima
0.29 km² overlap
Baakline
IUCN VIHima
0.28 km² overlap
Nature Reserve
0.27 km² overlap
Palm Islands
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.23 km² overlap
Jaj Cedars Nature Reserve
IUCN IbNature Reserve
0.20 km² overlap
Jaj Cedars
IUCN IVProtected forest
0.19 km² overlap
Kfarmatta
IUCN VIHima
0.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 563 distinct species · 48 698 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 نهر الأولي : 26 espèces reliées par 74 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 11 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°
16,2°C
Annual rain
1 027mm
Moisture idx (CMI)
-0,07
Runoff
357mm/an
PET
1 114mm
AET
586mm
Mean slope
12,3°
Water table
478cm
Forest
6%
Crops
14%
Urban
37%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)