HydroBASINS lev08 watershed · #1080731930
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 4 administrative regions across 3 countries : Banikoara, Karimama, Say, Tapoa
Sub-basin area
1 670km²
Upstream area
8 262,2km²
Discharge
15,87m³/s
Mean elev.
269m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mékrou2586 km²
- Bassin de Kérémou656 km²
4 dept-equivalent regions (GADM L2)
- 634.3 km²38.1% of basin
- 572.7 km²34.4% of basin
- 259.8 km²15.6% of basin
- SayTillabéry · Niger196.8 km²11.8% of basin
9 intersecting protected areas
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1361.27 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
1360.54 km² overlap
Site Ramsar du Complexe W
IUCN IIWetland of International Importance (Ramsar Site)
935.43 km² overlap
W (Benin)
IUCN IINational Park
896.36 km² overlap
W du Burkina Faso
IUCN IINational Park
267.65 km² overlap
Parc National du W
IUCN IIWetland of International Importance (Ramsar Site)
267.65 km² overlap
W Region
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
194.85 km² overlap
National Park
166.15 km² overlap
Parc national du W
IUCN IaWetland of International Importance (Ramsar Site)
160.64 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
868 distinct species · 20 422 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 13.5%, 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°
28,1°C
Annual rain
826mm
Moisture idx (CMI)
-0,59
Runoff
77mm/an
PET
2 008mm
AET
697mm
Mean slope
0,7°
Water table
163cm
Forest
8%
Crops
14%
Urban
0%
Protected
82%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)