HydroBASINS lev08 watershed · #1080722080
Bassin de Mékrou
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 : Karimama, Say
Sub-basin area
1 353,7km²
Upstream area
10 617,3km²
Discharge
28,81m³/s
Mean elev.
240m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mékrou1670 km²
- Bassin de Ruisseau1001 km²
2 dept-equivalent regions (GADM L2)
- 683.4 km²50.7% of basin
- SayTillabéry · Niger665.1 km²49.3% of basin
8 intersecting protected areas
W Parks Regional Complex
IUCN IIRegional Park
1341.02 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1308.78 km² overlap
National Park
687.34 km² overlap
W (Benin)
IUCN IINational Park
684.80 km² overlap
Site Ramsar du Complexe W
IUCN IIWetland of International Importance (Ramsar Site)
663.23 km² overlap
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
647.09 km² overlap
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
587.08 km² overlap
Dosso
IUCN IVPartial Fauna Reserve
0.56 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
508 distinct species · 2 465 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 Mékrou : 14 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 3 types (connectance 24.6%, filtre Serrano α=0.2). 5 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
694mm
Moisture idx (CMI)
-0,66
Runoff
60mm/an
PET
2 032mm
AET
585mm
Mean slope
0,8°
Water table
185cm
Forest
0%
Crops
29%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)