Ruisseau
Nant Varon
Crosses 1 administrative regions : Savoie
Total length
3km
Max discharge
0,2m³/s
Max Strahler
1
Segments matched
1
River geography1 admin regions · 3 communes
1 administrative regions crossed (GADM L2)
- SavoieAuvergne-Rhône-Alpes · France1.1 kmin this dpt
3 communes (L5)For countries with L5
- Le Bourget-du-Lac1.14 km
- Viviers-du-Lac0.00 km
- La Motte-Servolex0.00 km
8 intersecting protected areas
Lac du Bourget - Marais de Chautagne
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Rives Sud Du Lac Du Bourget
IUCN IVBiotope Protection Order
Rives sud du bourget
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Domaine de buttet
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
sud du lac du bourget
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
2 270 distinct species · 27 784 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Nant Varon : 27 espèces reliées par 106 interactions GloBI sur 5 types (connectance 14.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
3km
Max discharge
0,2m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.