HydroBASINS lev08 watershed · #1080172190
Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ واد درعة
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 across 2 countries : Ouarzazate, Oum El Assel
Sub-basin area
957,2km²
Upstream area
6 625,1km²
Discharge
10,17m³/s
Mean elev.
557m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080174790156 km²
- Bassin · #108017465023 km²
2 dept-equivalent regions (GADM L2)
- Ouarzazate760.5 km²79.5% of basin
- Oum El AsselTindouf · Algeria195.6 km²20.5% of basin
4 intersecting protected areas
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
772.53 km² overlap
Iriqui
IUCN Not ApplicablePermanent Hunting Reserve
588.31 km² overlap
Tindouf
IUCN Not ApplicableCultural Park
193.66 km² overlap
Tamagroute
IUCN Not ApplicablePermanent Hunting Reserve
167.87 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
92 distinct species · 283 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 de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ واد درعة : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 3 types (connectance 5.7%, filtre Serrano α=0.2). 2 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°
24,1°C
Annual rain
38mm
Moisture idx (CMI)
-0,98
Runoff
50mm/an
PET
1 988mm
AET
28mm
Mean slope
1,2°
Water table
266cm
Forest
0%
Crops
0%
Urban
0%
Protected
75%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)