HydroBASINS lev08 watershed · #1080668870
Bassin de Grand Bao Bôlon
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 6 administrative regions : Birkilane, Kaffrine, Kaolack, Koungheul, Malème Hodar +1
Sub-basin area
1 158,1km²
Upstream area
1 915km²
Discharge
1,74m³/s
Mean elev.
33m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #1080659650566 km²
- Bassin · #1080659800191 km²
6 dept-equivalent regions (GADM L2)
- 686.6 km²59.5% of basin
- 358.0 km²31.0% of basin
- Nioro du RipKaolack · Senegal58.4 km²5.1% of basin
- Malème HodarKaffrine · Senegal35.2 km²3.1% of basin
- 12.9 km²1.1% of basin
- 2.7 km²0.2% of basin
1 intersecting protected areas
Foret de Pate
IUCN Not ReportedForest Reserve
5.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
159 distinct species · 187 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 Grand Bao Bôlon : 20 espèces reliées par 18 interactions GloBI sur 3 types (connectance 6.5%, 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°
27,4°C
Annual rain
620mm
Moisture idx (CMI)
-0,70
Runoff
31mm/an
PET
2 090mm
AET
522mm
Mean slope
0,4°
Water table
74cm
Forest
0%
Crops
58%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)