HydroBASINS lev08 watershed · #1080029180
Bassin de Oued Massa ⴰⵙⵙⵉⴼ ⵏ ⵎⴰⵙⵙⴰ وادي ماسة
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 : Chtouka-Aït Baha, Tiznit
Sub-basin area
204km²
Upstream area
5 270,8km²
Discharge
16,41m³/s
Mean elev.
87m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Tiznit103.7 km²50.9% of basin
- 99.6 km²48.9% of basin
5 intersecting protected areas
Réserve de Biosphère de l'Arganeraie (RBA)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
203.75 km² overlap
Réserve Biologique de Massa I
IUCN Not ApplicablePermanent Hunting Reserve
122.34 km² overlap
Parc National de Sous-Massa
IUCN IINational Park
68.20 km² overlap
Réserve Biologique de Massa III
IUCN Not ApplicablePermanent Hunting Reserve
22.75 km² overlap
Zones humides de Souss-Massa
IUCN Not ReportedWetland of International Importance (Ramsar Site)
5.90 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
594 distinct species · 44 570 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Massa ⴰⵙⵙⵉⴼ ⵏ ⵎⴰⵙⵙⴰ وادي ماسة : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 2 types (connectance 9.0%, filtre Serrano α=0.2). 3 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°
19,5°C
Annual rain
181mm
Moisture idx (CMI)
-0,86
Runoff
70mm/an
PET
1 253mm
AET
156mm
Mean slope
1,9°
Water table
393cm
Forest
0%
Crops
14%
Urban
12%
Protected
63%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)