HydroBASINS lev08 watershed · #1080717330
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
572,1km²
Upstream area
5 712,9km²
Discharge
8,94m³/s
Mean elev.
247m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ruisseau932 km²
- Bassin de Tapoa52 km²
2 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger569.4 km²99.9% of basin
- 0.5 km²0.1% of basin
6 intersecting protected areas
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
508.03 km² overlap
Tamou
IUCN IVGame Reserve
337.33 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
223.72 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
223.72 km² overlap
National Park
220.00 km² overlap
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
207.65 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
800 distinct species · 6 777 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 2 bulles famille, 24 interactions GloBI documentées sur 4 types (connectance 4.3%, filtre Serrano α=0.2). Les 2 bulles regroupent 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
657mm
Moisture idx (CMI)
-0,68
Runoff
61mm/an
PET
2 047mm
AET
554mm
Mean slope
0,6°
Water table
207cm
Forest
0%
Crops
31%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)