Ruisseau· 7 segments
Le Foron
Crosses 2 administrative regions : Genève, Haute-Savoie
Total length
102km
Max discharge
1,6m³/s
Max Strahler
3
Segments matched
7
River geography2 admin regions · 26 communes
2 administrative regions crossed (GADM L2)
- Haute-SavoieAuvergne-Rhône-Alpes · France30.7 kmin this dpt
- GenèveGenève · Switzerland1.4 kmin this dpt
26 communes (L5)For countries with L5
- Viuz-en-Sallaz6.14 km
- Taninges5.87 km
- Mieussy4.89 km
- Ville-la-Grand3.84 km
- Saint-Cergues3.68 km
- Juvigny2.28 km
- Les Gets1.22 km
- La Côte-d'Arbroz0.94 km
- Bogève0.86 km
- Machilly0.68 km
- Lully0.17 km
- Bons-en-Chablais0.14 km
- Fessy0.01 km
- Sciez0.00 km
- Ambilly0.00 km
- Marcellaz0.00 km
- Peillonnex0.00 km
- Châtillon-sur-Cluses0.00 km
- Ville-en-Sallaz0.00 km
- Annemasse0.00 km
- Cranves-Sales0.00 km
- Boëge0.00 km
- Saint-André-de-Boëge0.00 km
- Ballaison0.00 km
- Brenthonne0.00 km
- La Rivière-Enverse0.00 km
20 intersecting protected areas
Roc d'Enfer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Roc d'enfer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Rives du Lac Léman
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Plateau de Loëx
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Plateau de Loëx
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Col Ratti
IUCN IVBiotope Protection Order
Zones humides du Bas Chablais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Maison de la Forêt
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
Dolliets
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
11 more protected areassorted by area
Haute Seymaz
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
Arales
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
Tourbières De Sommand
IUCN IVBiotope Protection Order
Marais De Grange Vigny
IUCN IVBiotope Protection Order
Biotope Protection Order
Land acquired by a regional conservatory of natural areas
Les Faverges
IUCN Not AssignedForest Reserves
parcelles isolees
IUCN IVLand acquired by a regional conservatory of natural areas
Prés de Faverges
IUCN Not AssignedPrivate Nature Reserves
mont caly
IUCN IVLand acquired by a regional conservatory of natural areas
Land acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 185 distinct species · 10 567 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Le Foron : 17 espèces reliées par 90 interactions GloBI sur 5 types (connectance 17.0%, filtre Serrano α=0.2). 16 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
102km
Max discharge
1,6m³/s
Max Strahler
3
Segments matched
7
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.