Ruisseau· 8 segments
L'Allondon
Crosses 2 administrative regions : Ain, Genève
Total length
19km
Max discharge
4,5m³/s
Max Strahler
3
Segments matched
8
River geography2 admin regions · 5 communes
2 administrative regions crossed (GADM L2)
- AinAuvergne-Rhône-Alpes · France8.8 kmin this dpt
- GenèveGenève · Switzerland1.2 kmin this dpt
5 communes (L5)For countries with L5
- Thoiry2.93 km
- Sergy2.82 km
- Saint-Genis-Pouilly1.71 km
- Crozet0.83 km
- Chevry0.51 km
19 intersecting protected areas
Haut-Jura
IUCN VRegional Nature Park
Complexe alluvial du Rhône genevois
IUCN Not ReportedEmerald Network
Complexe alluvial du Rhône genevois
IUCN Not AssignedEmerald Sites
Rhône-Verbois (GE)
IUCN IVFederal Inventory of Reserves for Waterbirds and Migratory Birds of International and National Imp.
Le Rhone genevois - Vallons de l Allondon et de la Laire
IUCN Not AssignedRAMSAR Sites
Wetland of International Importance (Ramsar Site)
Vallon de l'Allondon
IUCN Not AssignedForest Reserves
Allondon
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance
Vallon de l'Allondon
IUCN IVFederal Inventory of Alluvial Zones of National Importance
10 more protected areassorted by area
Grands Bois de Satigny
IUCN Not AssignedForest Reserves
Les Baillets
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Petite Afrique
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Les Granges
IUCN Not AssignedPrivate Nature Reserves
Les Îles
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Missezon
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Sur la Tourne
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Malval
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Les Granges
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Les Baillets
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
1 page = 1 named river (aggregation of 8 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
3 028 distinct species · 30 631 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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'Allondon : 33 espèces + 6 bulles famille, 100 interactions GloBI documentées sur 5 types (connectance 13.5%, 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
19km
Max discharge
4,5m³/s
Max Strahler
3
Segments matched
8
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.