HydroBASINS lev08 watershed · #1080974170
Bassin de Bia
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 8 administrative regions : Asunafo North, Asunafo South, Bia East, Bia West, Bodi +3
Sub-basin area
2 136,3km²
Upstream area
4 219,6km²
Discharge
43,92m³/s
Mean elev.
218m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bia1387 km²
- Bassin · #1080946910697 km²
8 dept-equivalent regions (GADM L2)
- 742.6 km²34.9% of basin
- 568.5 km²26.7% of basin
- 347.7 km²16.3% of basin
- 240.2 km²11.3% of basin
- 134.6 km²6.3% of basin
- 78.8 km²3.7% of basin
- 14.2 km²0.7% of basin
- 0.6 km²0.0% of basin
11 intersecting protected areas
Krokosua Hills
IUCN IIIForest Reserve
301.30 km² overlap
Subin
IUCN VIForest Reserve
223.91 km² overlap
Bia North
IUCN IIIForest Reserve
118.91 km² overlap
Bia Resource Reserve
IUCN VIResource Reserve
101.40 km² overlap
Bia National Park
IUCN IINational Park
98.37 km² overlap
Bia National Park
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
97.01 km² overlap
Ayum
IUCN VIForest Reserve
68.98 km² overlap
Bonsam Bepo
IUCN IIIForest Reserve
39.72 km² overlap
Bia Tawya
IUCN VIForest Reserve
23.73 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 169 distinct species · 12 415 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Bia : 27 espèces reliées par 21 interactions GloBI sur 3 types (connectance 5.2%, filtre Serrano α=0.2). 2 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°
26,3°C
Annual rain
1 393mm
Moisture idx (CMI)
-0,15
Runoff
342mm/an
PET
1 641mm
AET
1 167mm
Mean slope
3,2°
Water table
155cm
Forest
35%
Crops
8%
Urban
1%
Protected
50%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)