HydroBASINS lev08 watershed · #1080094330
Bassin de Oued Isly وادي إسلي
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 5 administrative regions across 2 countries : Beni Boussaid, Bouihi, Jerada, Maghnia, Oujda Angad
Sub-basin area
1 257,2km²
Upstream area
1 257,5km²
Discharge
1,24m³/s
Mean elev.
933m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 643.0 km²51.1% of basin
- 528.3 km²42.0% of basin
- 76.7 km²6.1% of basin
- 8.2 km²0.7% of basin
- Beni BoussaidTlemcen · Algeria0.9 km²0.1% of basin
5 intersecting protected areas
Chekhar - Beni Mathar
IUCN Not ApplicablePermanent Hunting Reserve
375.59 km² overlap
Oujda - Sidi Maafa - Jbel Hamra
IUCN Not ApplicablePermanent Hunting Reserve
66.63 km² overlap
Touissit et Ras Asfour
IUCN Not ApplicablePermanent Hunting Reserve
26.50 km² overlap
Frontière avec l'Algerie
IUCN Not ApplicablePermanent Hunting Reserve
12.25 km² overlap
Frontière avec l'Algerie
IUCN Not ApplicablePermanent Hunting Reserve
3.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
349 distinct species · 828 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Oued Isly وادي إسلي : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 6 types (connectance 7.2%, filtre Serrano α=0.2). 13 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°
14,8°C
Annual rain
370mm
Moisture idx (CMI)
-0,71
Runoff
28mm/an
PET
1 282mm
AET
316mm
Mean slope
4,7°
Water table
517cm
Forest
0%
Crops
9%
Urban
4%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)