HydroBASINS lev08 watershed · #1080288120
Bassin de Oued Tirest
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 : Bordj El Haouasse, Illizi
Sub-basin area
50,2km²
Upstream area
1 395,7km²
Discharge
0,06m³/s
Mean elev.
1 228m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Tirest926 km²
- Bassin de Oued Touknout419 km²
2 dept-equivalent regions (GADM L2)
- 36.6 km²73.1% of basin
- Bordj El HaouasseIllizi · Algeria13.5 km²26.9% of basin
2 intersecting protected areas
Tassili N'Ajjer
IUCN Not ApplicableCultural Park
50.10 km² overlap
Tassili N'Ajjer
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
50.10 km² overlap
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°
22,2°C
Annual rain
32mm
Moisture idx (CMI)
-0,98
Runoff
5mm/an
PET
1 790mm
AET
23mm
Mean slope
0,3°
Water table
156cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)