HydroBASINS lev08 watershed · #1080029770
Bassin · #1080029770
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
267,9km²
Upstream area
267,9km²
Discharge
2,46m³/s
Mean elev.
97m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Larache155.6 km²58.1% of basin
- 112.3 km²41.9% of basin
4 intersecting protected areas
Tanger - Tahaddart - Assilah
IUCN Not ApplicablePermanent Hunting Reserve
38.05 km² overlap
Réserve de Biosphère Intercontinentale de la Méditerranée (RBIM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
3.72 km² overlap
Oued Tahaddart
IUCN Not ApplicableBiological and Ecological Interest Site
1.81 km² overlap
Complexe du Bas Tahaddart
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.86 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
121 distinct species · 360 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 · #1080029770 : 23 espèces reliées par 52 interactions GloBI sur 3 types (connectance 12.8%, filtre Serrano α=0.2). 6 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°
17,8°C
Annual rain
767mm
Moisture idx (CMI)
-0,38
Runoff
290mm/an
PET
1 243mm
AET
618mm
Mean slope
3,8°
Water table
251cm
Forest
5%
Crops
93%
Urban
3%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)