HydroBASINS lev08 watershed · #2080531190
Bassin de la Saône
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, Rhône
Sub-basin area
357,1km²
Upstream area
27 753,3km²
Discharge
495,49m³/s
Mean elev.
291m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Saône203 km²
- Bassin de Bief du Moulin Cothenet159 km²
2 dept-equivalent regions (GADM L2)
- 271.0 km²75.7% of basin
- 87.0 km²24.3% of basin
58 communes (GADM L5)Available for FRA, RWA
- Saint-Georges-de-Reneins27.49 km²100% commune
- Villeneuve18.04 km²67% commune
- Vaux-en-Beaujolais17.71 km²100% commune
- Arnas17.62 km²100% commune
- Chaleins17.29 km²100% commune
- Rivolet14.59 km²91% commune
- Le Perréon14.27 km²99% commune
- Charentay14.10 km²100% commune
- Blacé11.27 km²100% commune
- Belleville10.90 km²98% commune
- Theizé10.65 km²90% commune
- Gleizé10.29 km²100% commune
- Francheleins9.96 km²72% commune
- Saint-Étienne-des-Oullières9.86 km²100% commune
- Villefranche-sur-Saône9.60 km²100% commune
- Denicé9.19 km²100% commune
- Ville-sur-Jarnioux8.67 km²83% commune
- Fareins8.36 km²100% commune
- Pommiers8.05 km²97% commune
- Odenas7.62 km²90% commune
- Frans7.48 km²95% commune
- Saint-Julien6.89 km²100% commune
- Saint-Étienne-la-Varenne6.66 km²99% commune
- Cogny6.20 km²98% commune
- Anse5.80 km²37% commune
- Messimy-sur-Saône5.68 km²100% commune
- Limas5.60 km²100% commune
- Liergues5.22 km²100% commune
- Lurcy4.92 km²100% commune
- Saint-Lager4.85 km²61% commune
- Jassans-Riottier4.64 km²94% commune
- Jarnioux4.42 km²100% commune
- Salles-Arbuissonnas-en-Beaujolai4.09 km²100% commune
- Montmerle-sur-Saône4.07 km²100% commune
- Montmelas-Saint-Sorlin4.03 km²100% commune
- Pouilly-le-Monial3.65 km²100% commune
- Lacenas3.20 km²100% commune
- Lachassagne2.15 km²62% commune
- Marcy1.83 km²56% commune
- Saint-Bernard1.42 km²45% commune
- Frontenas1.41 km²36% commune
- Montceaux1.37 km²13% commune
- Savigneux1.34 km²9% commune
- Guéreins1.21 km²26% commune
- Beauregard0.97 km²100% commune
- Saint-Cyr-le-Chatoux0.87 km²14% commune
- Saint-Jean-d'Ardières0.51 km²4% commune
- Quincié-en-Beaujolais0.41 km²2% commune
- Claveisolles0.38 km²1% commune
- Taponas0.34 km²5% commune
- Lamure-sur-Azergues0.31 km²2% commune
- Ars-sur-Formans0.23 km²4% commune
- Moiré0.22 km²10% commune
- Marchampt0.08 km²0% commune
- Sainte-Paule0.02 km²0% commune
- Alix0.01 km²0% commune
- Saint-Didier-de-Formans0.01 km²0% commune
- Misérieux0.01 km²0% commune
7 intersecting protected areas
Prairies humides et forêts alluviales du Val de Saône aval
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.95 km² overlap
La Dombes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.19 km² overlap
La Dombes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.19 km² overlap
La Dombes
IUCN Not ReportedWetland of International Importance (Ramsar Site)
4.19 km² overlap
Biotope Protection Order
2.31 km² overlap
marais de boistray
IUCN IVLand acquired by a regional conservatory of natural areas
0.38 km² overlap
lones du motio et de taponas
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 262 distinct species · 138 815 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 de la Saône : 25 espèces + 6 bulles famille, 62 interactions GloBI documentées sur 4 types (connectance 13.3%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
10,8°C
Annual rain
783mm
Moisture idx (CMI)
-0,11
Runoff
367mm/an
PET
884mm
AET
644mm
Mean slope
4,6°
Water table
210cm
Forest
11%
Crops
62%
Urban
16%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)