HydroBASINS lev08 watershed · #1080245850
Bassin de Oued Tiedaf
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 3 administrative regions : Bordj Omar Driss, Idles, Illizi
Sub-basin area
804,5km²
Upstream area
7 151,4km²
Discharge
0m³/s
Mean elev.
606m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Iskaouene3033 km²
- Bassin de Oued Arraguene1584 km²
3 dept-equivalent regions (GADM L2)
- 450.6 km²56.1% of basin
- 200.7 km²25.0% of basin
- Bordj Omar DrissIllizi · Algeria151.8 km²18.9% of basin
3 intersecting protected areas
Tassili N'Ajjer
IUCN Not ApplicableCultural Park
678.38 km² overlap
Tassili N'Ajjer
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
524.21 km² overlap
Tassili n'Ajjer
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
523.11 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°
24,3°C
Annual rain
17mm
Moisture idx (CMI)
-0,99
Runoff
2mm/an
PET
1 927mm
AET
10mm
Mean slope
4,6°
Water table
731cm
Forest
0%
Crops
0%
Urban
0%
Protected
65%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)