HydroBASINS lev08 watershed · #1080722070
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
52,1km²
Upstream area
4 209,1km²
Discharge
6,05m³/s
Mean elev.
246m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ruisseau193 km²
- Bassin de Tapoa96 km²
2 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger35.6 km²68.6% of basin
- 16.3 km²31.4% of basin
6 intersecting protected areas
W Parks Regional Complex
IUCN IIRegional Park
16.92 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
16.90 km² overlap
Tamou
IUCN IVGame Reserve
16.66 km² overlap
National Park
16.30 km² overlap
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
15.63 km² overlap
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
14.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
90 distinct species · 179 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 Tapoa : 8 espèces + 1 bulle famille, 7 interactions GloBI documentées sur 1 type (connectance 19.4%, filtre Serrano α=0.2). Les 1 bulle regroupe des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
28,6°C
Annual rain
674mm
Moisture idx (CMI)
-0,67
Runoff
55mm/an
PET
2 047mm
AET
568mm
Mean slope
0,3°
Water table
105cm
Forest
0%
Crops
44%
Urban
0%
Protected
70%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)