HydroBASINS lev08 watershed · #1080934790
Bassin de Ibba
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 6 administrative regions : Meridi, Rumbek, Tombura, Tonj, Wau +1
Sub-basin area
4 134,3km²
Upstream area
17 936,8km²
Discharge
99,45m³/s
Mean elev.
502m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ibba1043 km²
- Bassin de Ibba67 km²
6 dept-equivalent regions (GADM L2)
- Tombura1165.7 km²28.3% of basin
- 1111.3 km²27.0% of basin
- 959.6 km²23.3% of basin
- Yambio455.6 km²11.1% of basin
- 406.1 km²9.9% of basin
- 18.3 km²0.4% of basin
1 intersecting protected areas
Southern
IUCN IINational Park
2491.74 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 distinct species · 54 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°
26,7°C
Annual rain
1 161mm
Moisture idx (CMI)
-0,41
Runoff
46mm/an
PET
1 977mm
AET
982mm
Mean slope
1,0°
Water table
147cm
Forest
78%
Crops
21%
Urban
0%
Protected
60%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)