HydroBASINS lev08 watershed · #1080813520
Bassin de Oli
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 4 administrative regions across 2 countries : Baruten, Borgu, Kalalé, Nikki
Sub-basin area
563,2km²
Upstream area
563,2km²
Discharge
3,72m³/s
Mean elev.
323m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 363.7 km²64.8% of basin
- 150.1 km²26.8% of basin
- 44.9 km²8.0% of basin
- 2.2 km²0.4% of basin
1 intersecting protected areas
Kainji Lake
IUCN IINational Park
13.59 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
211 distinct species · 622 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°
26,6°C
Annual rain
1 119mm
Moisture idx (CMI)
-0,42
Runoff
207mm/an
PET
1 915mm
AET
885mm
Mean slope
0,9°
Water table
107cm
Forest
31%
Crops
12%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)