HydroBASINS lev08 watershed · #1080154330
Bassin de Oued Issen ⴰⵙⵉⴼ ⵏ ⵉⵙⵏ واد إسن
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 4 administrative regions : Agadir-Ida ou Tanane, Chichaoua, Essaouira, Taroudannt
Sub-basin area
1 529,2km²
Upstream area
1 529,2km²
Discharge
3,4m³/s
Mean elev.
1 330m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Taroudannt914.5 km²59.9% of basin
- Chichaoua498.9 km²32.7% of basin
- 84.5 km²5.5% of basin
- Essaouira29.8 km²2.0% of basin
7 intersecting protected areas
Réserve de Biosphère de l'Arganeraie (RBA)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
905.12 km² overlap
Tafraouten - Talmakante
IUCN Not ApplicablePermanent Hunting Reserve
302.87 km² overlap
Ain Asmama III
IUCN Not ApplicablePermanent Hunting Reserve
182.90 km² overlap
Ain Asmama
IUCN Not ApplicableBiological and Ecological Interest Site
177.74 km² overlap
Ain Assmama
IUCN Not ApplicablePermanent Hunting Reserve
78.97 km² overlap
Ain Asmama II
IUCN Not ApplicablePermanent Hunting Reserve
38.32 km² overlap
Ain Asmama I
IUCN Not ApplicablePermanent Hunting Reserve
16.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
274 distinct species · 777 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Issen ⴰⵙⵉⴼ ⵏ ⵉⵙⵏ واد إسن : 25 espèces reliées par 51 interactions GloBI sur 4 types (connectance 11.0%, 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°
13,0°C
Annual rain
427mm
Moisture idx (CMI)
-0,64
Runoff
59mm/an
PET
1 203mm
AET
364mm
Mean slope
14,1°
Water table
736cm
Forest
4%
Crops
35%
Urban
1%
Protected
43%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)