HydroBASINS lev08 watershed · #1080806090
Bassin de Oti
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 across 2 countries : Chereponi, Oti, Oti-Sud
Sub-basin area
869,8km²
Upstream area
37 082,3km²
Discharge
104,41m³/s
Mean elev.
142m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oti1209 km²
- Bassin de Oti769 km²
3 dept-equivalent regions (GADM L2)
- 550.1 km²63.5% of basin
- 316.1 km²36.5% of basin
- 0.1 km²0.0% of basin
5 intersecting protected areas
Oti-Mandouri
IUCN Not ReportedForest Reserve
200.44 km² overlap
Oti-Kéran
IUCN IINational Park
46.07 km² overlap
Parc national de la Keran
IUCN Not ReportedWetland of International Importance (Ramsar Site)
46.07 km² overlap
Galangashie
IUCN IVNatural resource management area
9.02 km² overlap
Cailcédrats
IUCN Not ReportedForest Reserve
8.96 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
376 distinct species · 1 522 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Oti : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 3 types (connectance 6.1%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
28,0°C
Annual rain
1 086mm
Moisture idx (CMI)
-0,45
Runoff
356mm/an
PET
1 980mm
AET
881mm
Mean slope
0,5°
Water table
54cm
Forest
18%
Crops
21%
Urban
3%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)