HydroBASINS lev08 watershed · #2080528110
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 3 administrative regions : Ain, Rhône, Saône-et-Loire
Sub-basin area
202,8km²
Upstream area
27 237,5km²
Discharge
489,97m³/s
Mean elev.
288m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Chalaronne333 km²
- Bassin de la Petite Grosne235 km²
3 dept-equivalent regions (GADM L2)
- 111.6 km²54.9% of basin
- 62.8 km²30.9% of basin
- 28.9 km²14.2% of basin
34 communes (GADM L5)Available for FRA, RWA
- Dracé14.93 km²100% commune
- Vauxrenard14.78 km²77% commune
- Fleurie13.90 km²100% commune
- Romanèche-Thorins9.88 km²100% commune
- Chaneins9.86 km²77% commune
- Jullié9.59 km²100% commune
- Villié-Morgon9.32 km²49% commune
- Saint-Trivier-sur-Moignans9.25 km²22% commune
- Corcelles-en-Beaujolais8.99 km²95% commune
- La Chapelle-de-Guinchay8.93 km²69% commune
- Montceaux8.90 km²87% commune
- Peyzieux-sur-Saône8.52 km²93% commune
- Chénas8.04 km²100% commune
- Juliénas8.03 km²100% commune
- Mogneneins6.85 km²81% commune
- Lancié6.52 km²100% commune
- Chiroubles6.50 km²95% commune
- Saint-Symphorien-d'Ancelles5.69 km²94% commune
- Saint-Didier-sur-Chalaronne5.44 km²21% commune
- Taponas4.06 km²56% commune
- Francheleins3.79 km²28% commune
- Genouilleux3.76 km²100% commune
- Guéreins3.29 km²72% commune
- Émeringes3.10 km²100% commune
- Saint-Amour-Bellevue2.27 km²46% commune
- Villeneuve2.12 km²8% commune
- Pruzilly2.06 km²47% commune
- Cenves2.04 km²8% commune
- Saint-Jacques-des-Arrêts1.19 km²17% commune
- Thoissey1.05 km²100% commune
- Saint-Jean-d'Ardières0.60 km²5% commune
- Saint-Vérand0.04 km²2% commune
- Avenas0.01 km²0% commune
- Ouroux0.00 km²0% commune
5 intersecting protected areas
La Dombes
IUCN Not ReportedWetland of International Importance (Ramsar Site)
4.64 km² overlap
La Dombes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.64 km² overlap
La Dombes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.64 km² overlap
Prairies humides et forêts alluviales du Val de Saône aval
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.34 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
3 163 distinct species · 124 342 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 Bassin de la Saône : 22 espèces reliées par 78 interactions GloBI sur 6 types (connectance 17.9%, filtre Serrano α=0.2). 8 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°
10,7°C
Annual rain
794mm
Moisture idx (CMI)
-0,09
Runoff
392mm/an
PET
875mm
AET
644mm
Mean slope
4,3°
Water table
214cm
Forest
13%
Crops
48%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)