HydroBASINS lev08 watershed · #2080514670
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 1 administrative regions : Saône-et-Loire
Sub-basin area
696,1km²
Upstream area
20 989,7km²
Discharge
386,11m³/s
Mean elev.
213m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Dheune1023 km²
- Bassin de la Saône9 km²
1 dept-equivalent regions (GADM L2)
- 698.0 km²100.0% of basin
82 communes (GADM L5)Available for FRA, RWA
- Gergy39.60 km²100% commune
- Saint-Martin-en-Bresse32.78 km²93% commune
- Givry25.78 km²100% commune
- Fontaines24.29 km²100% commune
- Demigny19.01 km²65% commune
- Sassenay18.74 km²100% commune
- Saint-Maurice-en-Rivière18.52 km²100% commune
- Mercurey15.84 km²100% commune
- Rully15.75 km²98% commune
- Chalon-sur-Saône15.53 km²100% commune
- Jully-lès-Buxy14.89 km²89% commune
- Mellecey13.97 km²100% commune
- La Charmée13.78 km²98% commune
- Virey-le-Grand13.08 km²100% commune
- Épervans12.59 km²100% commune
- Allériot12.58 km²95% commune
- Châtenoy-le-Royal12.29 km²100% commune
- Ciel12.20 km²71% commune
- Serrigny-en-Bresse12.12 km²97% commune
- Damerey12.06 km²100% commune
- Verjux11.84 km²100% commune
- Buxy11.66 km²100% commune
- Toutenant11.53 km²83% commune
- Allerey-sur-Saône11.48 km²69% commune
- Saint-Germain-lès-Buxy11.41 km²87% commune
- Granges11.29 km²100% commune
- Crissey11.26 km²100% commune
- Saint-Didier-en-Bresse11.16 km²100% commune
- Saint-Rémy10.61 km²100% commune
- Saint-Marcel10.50 km²100% commune
- Lessard-le-National10.45 km²100% commune
- Bissey-sous-Cruchaud9.70 km²85% commune
- Chagny9.48 km²49% commune
- Montcoy9.00 km²97% commune
- Bey8.93 km²100% commune
- Varennes-le-Grand8.73 km²46% commune
- Villegaudin8.16 km²94% commune
- Sevrey8.03 km²100% commune
- Saint-Loup-de-Varennes7.86 km²88% commune
- Saint-Loup-Géanges7.60 km²29% commune
- Jambles7.38 km²87% commune
- Champforgeuil7.33 km²100% commune
- Lans7.12 km²91% commune
- Châtenoy-en-Bresse6.73 km²100% commune
- Saint-Mard-de-Vaux6.58 km²95% commune
- Dracy-le-Fort6.44 km²100% commune
- Barizey5.85 km²100% commune
- Lux5.85 km²100% commune
- La Loyère5.78 km²100% commune
- Guerfand5.39 km²86% commune
- Moroges5.20 km²59% commune
- Aluze4.92 km²77% commune
- Ouroux-sur-Saône4.87 km²21% commune
- Saint-Désert4.86 km²100% commune
- Verdun-sur-le-Doubs4.39 km²61% commune
- Rosey4.22 km²100% commune
- Oslon4.05 km²78% commune
- Saint-Martin-sous-Montaigu3.98 km²100% commune
- Farges-lès-Chalon3.91 km²100% commune
- Saint-Denis-de-Vaux3.78 km²100% commune
- Fragnes3.72 km²100% commune
- Sermesse3.71 km²45% commune
- Saint-Vallerin3.64 km²53% commune
- Charrecey3.57 km²67% commune
- Montagny-lès-Buxy3.56 km²68% commune
- Châtel-Moron3.39 km²51% commune
- Diconne3.21 km²20% commune
- Saint-Bonnet-en-Bresse2.25 km²13% commune
- Saint-Jean-de-Vaux2.15 km²100% commune
- Saint-Gervais-en-Vallière1.27 km²8% commune
- La Racineuse0.89 km²12% commune
- Pontoux0.54 km²4% commune
- Chassey-le-Camp0.41 km²5% commune
- Chenôves0.36 km²3% commune
- Bragny-sur-Saône0.19 km²1% commune
- Saint-Christophe-en-Bresse0.16 km²1% commune
- Chamilly0.11 km²3% commune
- Mervans0.11 km²0% commune
- L'Abergement-Sainte-Colombe0.04 km²0% commune
- Bouzeron0.03 km²1% commune
- Saint-Ambreuil0.00 km²0% commune
- Saint-Léger-sur-Dheune0.00 km²0% commune
5 intersecting protected areas
Prairies alluviales et milieux associés de Saône-et-Loire
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.58 km² overlap
Prairies et forêts inondables du Val de Saône entre Chalon et Tournus et de la basse vallée de la Grosne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.84 km² overlap
Côte châlonnaise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.06 km² overlap
montagne de la folie
IUCN IVLand acquired by a regional conservatory of natural areas
0.86 km² overlap
Land acquired by a regional conservatory of natural areas
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 904 distinct species · 458 708 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 : 28 espèces reliées par 96 interactions GloBI sur 5 types (connectance 14.4%, filtre Serrano α=0.2). 9 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°
10,9°C
Annual rain
776mm
Moisture idx (CMI)
-0,10
Runoff
415mm/an
PET
861mm
AET
622mm
Mean slope
1,7°
Water table
91cm
Forest
13%
Crops
43%
Urban
10%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)