HydroBASINS lev08 watershed · #1080964050
Bassin de Yewa
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 9 administrative regions across 2 countries : Adja-Ouèrè, Ado Odo/Ota, Badagry, Ewekoro, Ifo +4
Sub-basin area
1 213,4km²
Upstream area
4 326,5km²
Discharge
34,65m³/s
Mean elev.
48m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080943130722 km²
- Bassin de Yewa593 km²
9 dept-equivalent regions (GADM L2)
- 563.3 km²46.6% of basin
- 206.0 km²17.0% of basin
- 189.1 km²15.6% of basin
- 116.2 km²9.6% of basin
- 81.9 km²6.8% of basin
- 37.0 km²3.1% of basin
- 11.8 km²1.0% of basin
- 3.1 km²0.3% of basin
1 moreFull L2 list
- Ewekoro0.0 km² · 0.0%
3 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
616 distinct species · 3 771 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Yewa : 31 espèces reliées par 37 interactions GloBI sur 3 types (connectance 6.2%, filtre Serrano α=0.2). 4 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°
27,2°C
Annual rain
1 282mm
Moisture idx (CMI)
-0,18
Runoff
567mm/an
PET
1 577mm
AET
1 052mm
Mean slope
1,3°
Water table
142cm
Forest
44%
Crops
60%
Urban
7%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)