HydroBASINS lev08 watershed · #1080183490
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 : Oum El Assel, Tata
Sub-basin area
24,4km²
Upstream area
53 375,4km²
Discharge
162,57m³/s
Mean elev.
350m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Tata23.0 km²94.2% of basin
- Oum El AsselTindouf · Algeria1.4 km²5.8% of basin
2 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 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°
22,8°C
Annual rain
90mm
Moisture idx (CMI)
-0,95
Runoff
33mm/an
PET
1 831mm
AET
74mm
Mean slope
1,4°
Water table
117cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)