HydroBASINS lev08 watershed · #1080173950
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 : Ouarzazate, Tata
Sub-basin area
73,6km²
Upstream area
35 108,5km²
Discharge
62,54m³/s
Mean elev.
471m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Tata62.5 km²85.0% of basin
- Ouarzazate11.0 km²15.0% of basin
3 intersecting protected areas
Oued Draa
IUCN Not ApplicablePermanent Hunting Reserve
49.30 km² overlap
Iriqui
IUCN Not ApplicablePermanent Hunting Reserve
24.21 km² overlap
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
23.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 2 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
24,0°C
Annual rain
57mm
Moisture idx (CMI)
-0,97
Runoff
51mm/an
PET
1 972mm
AET
44mm
Mean slope
0,8°
Water table
115cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)