HydroBASINS lev08 watershed · #2080534450
Bassin de la Leysse
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 : Haute-Savoie, Isère, Savoie
Sub-basin area
619,1km²
Upstream area
619,1km²
Discharge
12,4m³/s
Mean elev.
617m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 596.6 km²96.1% of basin
- 18.4 km²3.0% of basin
- 5.6 km²0.9% of basin
84 communes (GADM L5)Available for FRA, RWA
- Les Déserts32.01 km²96% commune
- La Motte-Servolex29.77 km²98% commune
- Saint-Thibaud-de-Couz22.36 km²92% commune
- Chambéry22.18 km²100% commune
- Le Bourget-du-Lac21.25 km²98% commune
- Chindrieux20.59 km²100% commune
- Thoiry17.11 km²99% commune
- Brison-Saint-Innocent17.06 km²100% commune
- Apremont16.77 km²97% commune
- Aix-les-Bains15.68 km²100% commune
- Albens15.40 km²99% commune
- Montcel15.21 km²100% commune
- Saint-Cassin14.96 km²100% commune
- Saint-Germain-la-Chambotte12.99 km²100% commune
- Grésy-sur-Aix12.98 km²100% commune
- Saint-Jean-d'Arvey12.93 km²100% commune
- La Biolle12.92 km²100% commune
- Saint-Pierre-de-Curtille12.64 km²77% commune
- Vimines12.63 km²88% commune
- La Chapelle-du-Mont-du-Chat11.57 km²96% commune
- Drumettaz-Clarafond11.30 km²100% commune
- La Thuile11.30 km²63% commune
- Montagnole11.05 km²100% commune
- Puygros10.13 km²100% commune
- Méry9.13 km²100% commune
- Curienne8.85 km²98% commune
- Ruffieux8.54 km²61% commune
- Saint-Alban-Leysse8.46 km²100% commune
- Saint-Offenge-Dessus7.68 km²100% commune
- Tresserve7.63 km²100% commune
- Saint-Offenge-Dessous7.62 km²94% commune
- Bourdeau7.52 km²94% commune
- Saint-Sulpice7.30 km²85% commune
- La Ravoire7.02 km²100% commune
- Trévignin6.74 km²100% commune
- Mouxy6.67 km²100% commune
- Sonnaz6.64 km²100% commune
- Verel-Pragondran6.51 km²100% commune
- Saint-Girod6.44 km²100% commune
- Saint-Baldoph6.21 km²100% commune
- Saint-Félix6.09 km²92% commune
- Chapareillan5.60 km²18% commune
- Challes-les-Eaux5.45 km²100% commune
- Viviers-du-Lac5.42 km²100% commune
- Chainaz-les-Frasses5.18 km²92% commune
- Pugny-Chatenod5.11 km²100% commune
- Voglans4.54 km²100% commune
- Saint-Ours4.43 km²100% commune
- Cognin4.35 km²100% commune
- Mognard4.30 km²100% commune
- Cessens4.12 km²32% commune
- Vions3.86 km²69% commune
- Conjux3.81 km²99% commune
- Saint-François-de-Sales3.71 km²27% commune
- Barberaz3.66 km²100% commune
- Cusy3.18 km²18% commune
- Épersy3.07 km²100% commune
- Saint-Jeoire-Prieuré2.98 km²61% commune
- Bassens2.84 km²100% commune
- Les Marches2.61 km²16% commune
- Barby2.60 km²100% commune
- Chanaz2.60 km²34% commune
- Arith2.46 km²10% commune
- Ontex2.44 km²55% commune
- Jacob-Bellecombette2.29 km²100% commune
- Saint-Jean-de-Couz2.08 km²26% commune
- Aillon-le-Jeune2.03 km²6% commune
- Entremont-le-Vieux2.02 km²6% commune
- Bloye1.65 km²40% commune
- Héry-sur-Alby1.57 km²22% commune
- Myans1.37 km²38% commune
- Massingy0.37 km²3% commune
- Moye0.25 km²1% commune
- Chignin0.18 km²2% commune
- Meyrieux-Trouet0.15 km²1% commune
- Nances0.14 km²1% commune
- Marcieux0.12 km²3% commune
- Verthemex0.07 km²1% commune
- Marigny-Saint-Marcel0.07 km²1% commune
- Alby-sur-Chéran0.03 km²0% commune
- Corbel0.01 km²0% commune
- Saint-Paul0.01 km²0% commune
- Billième0.01 km²0% commune
- Jongieux0.00 km²0% commune
30 intersecting protected areas
Massif Des Bauges
IUCN VRegional Nature Park
172.74 km² overlap
Chartreuse
IUCN VRegional Nature Park
110.43 km² overlap
Lac du Bourget - Marais de Chautagne
IUCN Not ReportedWetland of International Importance (Ramsar Site)
54.43 km² overlap
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
54.07 km² overlap
Lac du Bourget et marais de Chautagne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
54.07 km² overlap
Réseau de zones humides de l'Albanais
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.92 km² overlap
Rebord méridional du Massif des Bauges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.18 km² overlap
Rebord méridional du massif des Bauges
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.18 km² overlap
Hauts de Chartreuse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.76 km² overlap
21 more protected areassorted by overlap area
Hauts De Chartreuse
IUCN IVNational Nature Reserve
2.74 km² overlap
Marais de chautagne
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.75 km² overlap
Rives Sud Du Lac Du Bourget
IUCN IVBiotope Protection Order
1.31 km² overlap
marais de chautagne
IUCN IVLand acquired by a regional conservatory of natural areas
0.71 km² overlap
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.64 km² overlap
Biotope Protection Order
0.61 km² overlap
Rives sud du bourget
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.59 km² overlap
Domaine de buttet
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.41 km² overlap
Marais Des Noux
IUCN IVBiotope Protection Order
0.24 km² overlap
Special Areas of Conservation (Habitats Directive)
0.22 km² overlap
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.21 km² overlap
Special Areas of Conservation (Habitats Directive)
0.21 km² overlap
Avant-pays savoyard
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.21 km² overlap
Land acquired by a regional conservatory of natural areas
0.18 km² overlap
Tourbière Des Creusates
IUCN IVBiotope Protection Order
0.16 km² overlap
Rive du poete
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.10 km² overlap
Tourbière des Creusates
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Baie de portout
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.09 km² overlap
Land acquired by a regional conservatory of natural areas
0.07 km² overlap
Baie de memard
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.07 km² overlap
marais vuillerme
IUCN IVLand acquired by a regional conservatory of natural areas
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
8 245 distinct species · 547 119 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Leysse : 19 espèces reliées par 83 interactions GloBI sur 5 types (connectance 22.0%, 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°
9,3°C
Annual rain
999mm
Moisture idx (CMI)
0,11
Runoff
632mm/an
PET
869mm
AET
683mm
Mean slope
12,1°
Water table
400cm
Forest
76%
Crops
4%
Urban
20%
Protected
44%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)