Rivière· 24 segments
L'Arc
Crosses 1 administrative regions : Savoie
Total length
213km
Max discharge
27,6m³/s
Max Strahler
4
Segments matched
24
River geography1 admin regions · 46 communes
1 administrative regions crossed (GADM L2)
- SavoieAuvergne-Rhône-Alpes · France71.0 kmin this dpt
46 communes (L5)For countries with L5
- Bessans7.76 km
- Bonneval-sur-Arc6.06 km
- Saint-Étienne-de-Cuines4.18 km
- Saint-Jean-de-Maurienne3.92 km
- Sainte-Marie-de-Cuines3.84 km
- La Chapelle3.62 km
- Saint-Rémy-de-Maurienne3.11 km
- Saint-Julien-Mont-Denis3.03 km
- Orelle2.91 km
- Saint-Martin-de-la-Porte2.55 km
- La Chambre2.42 km
- Saint-André2.32 km
- Montricher-Albanne2.30 km
- Freney2.18 km
- Saint-Avre2.12 km
- Saint-Léger2.08 km
- Villargondran1.92 km
- Modane1.87 km
- Pontamafrey-Montpascal1.71 km
- Saint-Pierre-de-Belleville1.69 km
- Fourneaux1.58 km
- Avrieux1.37 km
- Chamousset1.10 km
- Saint-Alban-des-Hurtières1.09 km
- Aussois0.98 km
- Argentine0.80 km
- Bourgneuf0.75 km
- Épierre0.56 km
- Saint-Alban-des-Villards0.53 km
- Les Chavannes-en-Maurienne0.50 km
- Saint-Georges-des-Hurtières0.14 km
- Saint-Michel-de-Maurienne0.00 km
- Valloire0.00 km
- Notre-Dame-du-Cruet0.00 km
- Saint-Martin-sur-la-Chambre0.00 km
- Bramans0.00 km
- Villarodin-Bourget0.00 km
- Hermillon0.00 km
- Jarrier0.00 km
- Le Châtel0.00 km
- Aiton0.00 km
- Montvernier0.00 km
- Châteauneuf0.00 km
- Chamoux-sur-Gelon0.00 km
- Betton-Bettonet0.00 km
- Saint-Martin-d'Arc0.00 km
15 intersecting protected areas
Massif de la Vanoise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
La Vanoise
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vanoise
IUCN IINational Park - Core Area
Massif de la Lauzière
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Massif de la Lauzière
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Réseau de vallons d'altitude à Caricion
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Perron des Encombres
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Perron des Encombres
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Formations forestières et herbacées des Alpes internes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6 more protected areassorted by area
Special Areas of Conservation (Habitats Directive)
Réseau de zones humides et alluviales des Hurtières
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Land acquired by a regional conservatory of natural areas
boucherance - la lilette
IUCN IVLand acquired by a regional conservatory of natural areas
le poutet
IUCN IVLand acquired by a regional conservatory of natural areas
serpoliere
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 24 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 065 distinct species · 10 552 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 L'Arc : 11 espèces reliées par 17 interactions GloBI sur 2 types (connectance 18.7%, filtre Serrano α=0.2). 3 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
213km
Max discharge
27,6m³/s
Max Strahler
4
Segments matched
24
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.