HydroBASINS lev08 watershed · #2080418180
Bassin de la Sambre
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 1 administrative regions : Namur
Sub-basin area
101,9km²
Upstream area
2 855,6km²
Discharge
33,75m³/s
Mean elev.
157m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
8 intersecting protected areas
Vallée de la Sambre en aval de la confluence avec l'Orneau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.83 km² overlap
Vallée de la Sambre en aval de la confluence avec l'Orneau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.83 km² overlap
Vallée de l'Orneau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
Vallée de l'Orneau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.22 km² overlap
Malonne (Fort de)
IUCN IVState Nature Reserve (Walloon Region)
0.05 km² overlap
Floriffoux (Noue de )
IUCN IVScientific Interest Site (Walloon Region)
0.01 km² overlap
Vallée de la Meuse de Dave à Marche-les-Dames
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.00 km² overlap
Vallée de la Meuse de Dave à Marche-les-Dames
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 943 distinct species · 22 666 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 la Sambre : 17 espèces + 10 bulles famille, 44 interactions GloBI documentées sur 4 types (connectance 12.5%, filtre Serrano α=0.2). Les 10 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
9,6°C
Annual rain
852mm
Moisture idx (CMI)
0,11
Runoff
371mm/an
PET
757mm
AET
593mm
Mean slope
3,7°
Water table
244cm
Forest
18%
Crops
27%
Urban
41%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)