HydroBASINS lev08 watershed · #1080672270
Bassin de Pallan Bolon
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 5 administrative regions across 2 countries : Koungheul, Koupentoum, Niani, Sami, Tambacounda
Sub-basin area
1 078,2km²
Upstream area
1 078,2km²
Discharge
1,2m³/s
Mean elev.
42m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- KoupentoumTambacounda · Senegal685.8 km²63.8% of basin
- 144.6 km²13.5% of basin
- TambacoundaTambacounda · Senegal133.9 km²12.5% of basin
- 107.6 km²10.0% of basin
- 2.3 km²0.2% of basin
1 intersecting protected areas
Foret de Malem Niani
IUCN Not ReportedForest Reserve
3.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
353 distinct species · 4 104 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 Pallan Bolon : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 8.3%, filtre Serrano α=0.2). 6 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°
27,5°C
Annual rain
726mm
Moisture idx (CMI)
-0,65
Runoff
35mm/an
PET
2 060mm
AET
612mm
Mean slope
0,3°
Water table
88cm
Forest
0%
Crops
25%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)