HydroBASINS lev08 watershed · #1080029760
Bassin de Oued Lahlou
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 : Larache, Tanger-Assilah
Sub-basin area
245,5km²
Upstream area
245,5km²
Discharge
2,06m³/s
Mean elev.
95m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 163.1 km²66.4% of basin
- Larache74.2 km²30.2% of basin
7 intersecting protected areas
Tanger - Tahaddart - Assilah
IUCN Not ApplicablePermanent Hunting Reserve
19.56 km² overlap
Larache
IUCN Not ApplicablePermanent Hunting Reserve
3.49 km² overlap
Khmis Sahel
IUCN Not ApplicablePermanent Hunting Reserve
0.78 km² overlap
Marais du Bas Loukous (Larache)
IUCN Not ApplicableBiological and Ecological Interest Site
0.67 km² overlap
Complexe du Bas Loukkos
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.62 km² overlap
Complexe du Bas Tahaddart
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.09 km² overlap
Oued Tahaddart
IUCN Not ApplicableBiological and Ecological Interest Site
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
469 distinct species · 4 001 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Lahlou : 29 espèces reliées par 71 interactions GloBI sur 2 types (connectance 11.3%, filtre Serrano α=0.2). 7 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°
17,6°C
Annual rain
732mm
Moisture idx (CMI)
-0,42
Runoff
271mm/an
PET
1 256mm
AET
606mm
Mean slope
4,4°
Water table
338cm
Forest
15%
Crops
75%
Urban
8%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)