HydroBASINS lev08 watershed · #1080722710
Bassin de Tapoa
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 2 administrative regions across 2 countries : Say, Tapoa
Sub-basin area
207,2km²
Upstream area
207,2km²
Discharge
0,31m³/s
Mean elev.
259m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 206.3 km²100.0% of basin
- SayTillabéry · Niger0.1 km²0.0% of basin
3 intersecting protected areas
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
0.05 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.02 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 distinct species · 2 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°
28,5°C
Annual rain
690mm
Moisture idx (CMI)
-0,66
Runoff
48mm/an
PET
2 049mm
AET
581mm
Mean slope
0,3°
Water table
173cm
Forest
0%
Crops
8%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)