HydroBASINS lev08 watershed · #1080722440
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
96,4km²
Upstream area
3 963,7km²
Discharge
5,65m³/s
Mean elev.
247m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tapoa1309 km²
- Bassin de Tapoa207 km²
2 dept-equivalent regions (GADM L2)
- SayTillabéry · Niger54.7 km²57.0% of basin
- 41.3 km²43.0% of basin
5 intersecting protected areas
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
53.94 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
53.26 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
53.21 km² overlap
National Park
52.56 km² overlap
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
17.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
159 distinct species · 410 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 : 12 espèces reliées par 18 interactions GloBI sur 3 types (connectance 17.1%, 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°
28,6°C
Annual rain
687mm
Moisture idx (CMI)
-0,66
Runoff
52mm/an
PET
2 048mm
AET
578mm
Mean slope
0,3°
Water table
97cm
Forest
0%
Crops
24%
Urban
0%
Protected
55%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)