HydroBASINS lev08 watershed · #2080538660
Bassin du Rhône
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Ain, Savoie
Sub-basin area
411,7km²
Upstream area
14 054km²
Discharge
431,3m³/s
Mean elev.
478m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin du Séran260 km²
- Bassin du Rhône16 km²
2 dept-equivalent regions (GADM L2)
- 243.9 km²59.1% of basin
- 168.8 km²40.9% of basin
68 communes (GADM L5)Available for FRA, RWA
- Yenne23.40 km²100% commune
- Belley23.01 km²100% commune
- Peyrieu13.75 km²97% commune
- Saint-Paul13.72 km²100% commune
- Contrevoz12.87 km²89% commune
- Arbignieu12.67 km²95% commune
- Virieu-le-Grand12.59 km²100% commune
- Saint-Jean-de-Chevelu12.02 km²100% commune
- La Burbanche11.24 km²100% commune
- Chazey-Bons10.89 km²100% commune
- Meyrieux-Trouet10.82 km²99% commune
- Champagneux10.69 km²100% commune
- Thézillieu10.66 km²39% commune
- Nattages10.14 km²100% commune
- La Balme10.07 km²100% commune
- Loisieux9.33 km²100% commune
- Traize9.11 km²100% commune
- Verthemex8.83 km²99% commune
- Prémillieu8.26 km²97% commune
- Ordonnaz7.87 km²53% commune
- Saint-Maurice-de-Rotherens7.77 km²100% commune
- Virignin7.72 km²100% commune
- Rossillon7.52 km²100% commune
- Massignieu-de-Rives7.32 km²81% commune
- Saint-Pierre-d'Alvey7.26 km²98% commune
- Armix7.25 km²100% commune
- Brens6.50 km²100% commune
- Jongieux6.49 km²100% commune
- Andert-et-Condon6.46 km²100% commune
- Cheignieu-la-Balme6.31 km²100% commune
- Murs-et-Gélignieux6.16 km²100% commune
- Magnieu6.09 km²100% commune
- Billième5.86 km²100% commune
- Parves5.62 km²100% commune
- Lucey5.51 km²84% commune
- Gresin5.32 km²100% commune
- Cuzieu4.95 km²100% commune
- Izieu4.91 km²64% commune
- Pugieu4.83 km²100% commune
- Saint-Genix-sur-Guiers4.70 km²38% commune
- Ceyzérieu3.97 km²20% commune
- Belmont-Luthézieu3.90 km²20% commune
- Saint-Germain-les-Paroisses3.64 km²21% commune
- Hostiaz3.47 km²36% commune
- Saint-Pierre-de-Curtille3.28 km²20% commune
- Marcieux2.99 km²63% commune
- La Chapelle-Saint-Martin2.66 km²100% commune
- Arandas2.26 km²16% commune
- Marignieu2.26 km²60% commune
- Sainte-Marie-d'Alvey2.02 km²81% commune
- Ontex1.97 km²45% commune
- Saint-Martin-de-Bavel1.90 km²22% commune
- Gerbaix1.79 km²25% commune
- Brégnier-Cordon1.73 km²15% commune
- Rochefort1.66 km²29% commune
- Saint-Champ1.57 km²32% commune
- Innimond1.27 km²10% commune
- Colomieu0.74 km²13% commune
- Tenay0.57 km²4% commune
- La Chapelle-du-Mont-du-Chat0.52 km²4% commune
- Bourdeau0.48 km²6% commune
- Le Bourget-du-Lac0.41 km²2% commune
- Cressin-Rochefort0.41 km²5% commune
- Prémeyzel0.36 km²5% commune
- Vongnes0.23 km²11% commune
- Novalaise0.09 km²1% commune
- Conand0.08 km²1% commune
- La Motte-Servolex0.01 km²0% commune
30 intersecting protected areas
Special Areas of Conservation (Habitats Directive)
15.25 km² overlap
Avant-pays savoyard
IUCN Not ReportedSpecial Protection Area (Birds Directive)
15.16 km² overlap
Biotope Protection Order
13.86 km² overlap
Forêts alluviales et lônes du Haut Rhône
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.78 km² overlap
Forêts alluviales et lônes du Haut Rhône
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.78 km² overlap
Milieux remarquables du Bas Bugey
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.01 km² overlap
Chartreuse
IUCN VRegional Nature Park
4.50 km² overlap
Haut-Rhône Français
IUCN IVNational Nature Reserve
1.63 km² overlap
Protected perimeter around a national nature reserve
1.03 km² overlap
21 more protected areassorted by overlap area
Biotope Protection Order
0.75 km² overlap
Marais Du Puits De L\'Enfer
IUCN IVBiotope Protection Order
0.18 km² overlap
marais de chevelu
IUCN IVLand acquired by a regional conservatory of natural areas
0.16 km² overlap
Source Des Gaces
IUCN IVBiotope Protection Order
0.14 km² overlap
les puits d\'enfer
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
les cotes vieilles
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
marais de billieme
IUCN IVLand acquired by a regional conservatory of natural areas
0.06 km² overlap
aulnaie du truison
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
marais de cottin
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
la meline
IUCN IVLand acquired by a regional conservatory of natural areas
0.05 km² overlap
coteau des altesses
IUCN IVLand acquired by a regional conservatory of natural areas
0.04 km² overlap
gave cattin
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
tourbiere de grand champ
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
grands champs
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
mollairon
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
marais des rives
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
le grand marais
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
lac d\'armaille
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
le marais
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
cote-envers
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
marais d\'archine
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
8 236 distinct species · 541 874 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Bassin du Rhône : 28 espèces reliées par 129 interactions GloBI sur 7 types (connectance 10.5%, filtre Serrano α=0.2). 22 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
10,0°C
Annual rain
966mm
Moisture idx (CMI)
0,07
Runoff
655mm/an
PET
883mm
AET
686mm
Mean slope
10,6°
Water table
398cm
Forest
88%
Crops
1%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)