HydroBASINS lev08 watershed · #1080851510
Bassin de Ouandija
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 : Birao, Ouadda, Ouanda Djallé
Sub-basin area
883,5km²
Upstream area
883,6km²
Discharge
1,09m³/s
Mean elev.
706m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 559.2 km²63.6% of basin
- 311.4 km²35.4% of basin
- 9.2 km²1.0% of basin
1 intersecting protected areas
Yata-Ngaya
IUCN IVFaunal Reserve
99.35 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 distinct species · 25 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°
25,1°C
Annual rain
977mm
Moisture idx (CMI)
-0,53
Runoff
41mm/an
PET
2 065mm
AET
825mm
Mean slope
3,2°
Water table
253cm
Forest
59%
Crops
5%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)