HydroBASINS lev08 watershed · #1080173670
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
86,7km²
Upstream area
38 766,7km²
Discharge
78,19m³/s
Mean elev.
468m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- Tata86.2 km²99.6% of basin
- Oum El AsselTindouf · Algeria0.4 km²0.4% 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°
23,2°C
Annual rain
83mm
Moisture idx (CMI)
-0,96
Runoff
46mm/an
PET
1 911mm
AET
67mm
Mean slope
4,1°
Water table
458cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)