Rivière· 9 segments
Lesse
Crosses 1 administrative regions : Namur
Total length
45km
Max discharge
142,1m³/s
Max Strahler
5
Segments matched
9
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- NamurWallonie · Belgium25.5 kmin this dpt
29 intersecting protected areas
Bassin de la Lesse entre Villers-sur-Lesse et Chanly
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Bassin de la Lesse entre Villers-sur-Lesse et Chanly
IUCN Not ReportedSpecial Protection Area (Birds Directive)
La Famenne entre Eprave et Havrenne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
La Famenne entre Eprave et Havrenne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallées des Ruisseaux de Fenffe et du Vachau
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallées des Ruisseaux de Fenffe et du Vachau
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Wimbe
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Wimbe
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de la Lesse en aval de Houyet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
20 more protected areassorted by area
Vallée de la Lesse en aval de Houyet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Bassin de l'Iwène
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Bassin de l'Iwène
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de la Meuse d'Hastière à Dinant
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Meuse d'Hastière à Dinant
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de la Meuse de Dinant à Yvoir
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée de la Meuse de Dinant à Yvoir
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Lesse entre Villers-sur-Lesse et Houyet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vallée de la Lesse entre Villers-sur-Lesse et Houyet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée du Biran
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vallée du Biran
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Furfooz
IUCN IVCertified Nature Reserve (Walloon Region)
Basse Wimbe
IUCN IVCertified Nature Reserve (Walloon Region)
Argilière de Wanlin
IUCN IVState Nature Reserve (Walloon Region)
State Nature Reserve (Walloon Region)
State Nature Reserve (Walloon Region)
Moniat (Ile de)
IUCN IVState Nature Reserve (Walloon Region)
Scientific Interest Site (Walloon Region)
Trou qui fume
IUCN IVScientific Interest Site (Walloon Region)
Puits des Vaulx
IUCN IVScientific Interest Site (Walloon Region)
1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 483 distinct species · 7 602 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Lesse : 27 espèces + 6 bulles famille, 48 interactions GloBI documentées sur 4 types (connectance 9.1%, filtre Serrano α=0.2). Les 6 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).
Hydrology (HydroRIVERS v10)
Total length
45km
Max discharge
142,1m³/s
Max Strahler
5
Segments matched
9
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.