HydroBASINS lev08 watershed · #2080539720
Bassin de l'Isère
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 across 2 countries : Aosta, Haute-Savoie, Savoie
Sub-basin area
2 698,7km²
Upstream area
2 698,7km²
Discharge
45,26m³/s
Mean elev.
1 771m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 2539.9 km²93.9% of basin
- 164.5 km²6.1% of basin
- Aosta0.7 km²0.0% of basin
122 communes (GADM L5)Available for FRA, RWA
- Bourg-Saint-Maurice181.84 km²96% commune
- Saint-Martin-de-Belleville159.63 km²98% commune
- Beaufort152.74 km²100% commune
- Sainte-Foy-Tarentaise111.59 km²94% commune
- Val-d'Isère106.49 km²96% commune
- Pralognan-la-Vanoise103.28 km²97% commune
- Champagny-en-Vanoise97.40 km²100% commune
- La Léchère96.40 km²98% commune
- Tignes91.85 km²98% commune
- Les Allues85.88 km²100% commune
- Peisey-Nancroix73.24 km²100% commune
- Hauteluce62.99 km²100% commune
- Saint-Bon-Tarentaise58.25 km²100% commune
- Ugine58.11 km²100% commune
- Saint-Jean-de-Belleville57.72 km²97% commune
- Aime50.90 km²100% commune
- Séez43.31 km²96% commune
- Megève42.99 km²98% commune
- Mâcot-la-Plagne37.44 km²100% commune
- La Giettaz34.66 km²97% commune
- Villaroger34.47 km²100% commune
- Cevins33.31 km²100% commune
- Queige32.24 km²100% commune
- Granier30.09 km²100% commune
- Bozel29.05 km²100% commune
- Les Avanchers-Valmorel27.02 km²100% commune
- Montvalezan25.85 km²98% commune
- La Côte-d'Aime25.33 km²100% commune
- Saint-Nicolas-la-Chapelle23.81 km²100% commune
- Bellentre23.65 km²100% commune
- Planay22.96 km²100% commune
- Praz-sur-Arly22.63 km²100% commune
- Villard-sur-Doron22.19 km²100% commune
- La Bâthie21.97 km²100% commune
- Notre-Dame-de-Bellecombe20.87 km²100% commune
- Mercury20.87 km²91% commune
- Saint-Paul-sur-Isère20.43 km²100% commune
- Aigueblanche20.01 km²100% commune
- Bonneval19.00 km²99% commune
- Notre-Dame-du-Pré18.08 km²100% commune
- Albertville17.70 km²100% commune
- Le Bouchet17.60 km²97% commune
- Serraval17.44 km²85% commune
- Les Chapelles17.23 km²100% commune
- Flumet16.93 km²100% commune
- Saint-Ferréol16.51 km²98% commune
- Bonvillard16.33 km²98% commune
- Esserts-Blay15.30 km²100% commune
- Marlens15.01 km²100% commune
- Marthod14.93 km²100% commune
- Tours-en-Savoie14.86 km²100% commune
- Sainte-Hélène-sur-Isère14.53 km²100% commune
- Montgirod13.60 km²100% commune
- Montagny13.60 km²100% commune
- Cohennoz13.56 km²100% commune
- Montailleur13.39 km²89% commune
- Aiton12.60 km²76% commune
- Feissons-sur-Isère11.67 km²100% commune
- Hautecour10.77 km²100% commune
- Landry10.33 km²100% commune
- Notre-Dame-des-Millières10.19 km²100% commune
- Crest-Voland10.03 km²100% commune
- La Perrière9.76 km²100% commune
- Saint-Marcel9.32 km²100% commune
- Grignon9.13 km²100% commune
- Grésy-sur-Isère8.75 km²100% commune
- Rognaix8.71 km²97% commune
- Verrens-Arvey8.69 km²79% commune
- Valezan8.30 km²100% commune
- Cléry8.24 km²76% commune
- Gilly-sur-Isère7.38 km²100% commune
- Saint-Gervais-les-Bains6.89 km²8% commune
- Monthion6.30 km²100% commune
- Le Bois5.44 km²100% commune
- Cordon5.33 km²25% commune
- Villarlurin5.29 km²100% commune
- Thénésol5.25 km²100% commune
- Pallud4.95 km²100% commune
- Feissons-sur-Salins4.79 km²100% commune
- Tournon4.68 km²100% commune
- Les Contamines-Montjoie4.60 km²5% commune
- Salins-les-Thermes4.56 km²100% commune
- Fontaine-le-Puits4.39 km²100% commune
- Faverges4.33 km²17% commune
- Allondaz4.02 km²100% commune
- Cons-Sainte-Colombe3.53 km²100% commune
- Saint-Vital3.33 km²100% commune
- Moûtiers3.18 km²100% commune
- Césarches2.83 km²100% commune
- Brides-les-Bains2.53 km²100% commune
- Venthon2.51 km²100% commune
- Plancherine2.36 km²35% commune
- Demi-Quartier2.26 km²27% commune
- Fréterive1.97 km²18% commune
- Frontenex1.72 km²100% commune
- Sallanches1.67 km²3% commune
- Termignon1.65 km²1% commune
- Saint-Oyen1.64 km²100% commune
- La Clusaz1.58 km²4% commune
- Manigod1.42 km²3% commune
- Chamousset1.24 km²19% commune
- Modane1.13 km²1% commune
- Bonneval-sur-Arc0.87 km²1% commune
- École0.74 km²2% commune
- Saint-François-Longchamp0.36 km²3% commune
- Aussois0.35 km²1% commune
- Combloux0.34 km²2% commune
- Bonvillaret0.23 km²3% commune
- Montsapey0.22 km²1% commune
- Les Clefs0.19 km²1% commune
- Hermillon0.18 km²1% commune
- Villarodin-Bourget0.15 km²0% commune
- Montmin0.13 km²1% commune
- Orelle0.12 km²0% commune
- Argentine0.07 km²0% commune
- Montgellafrey0.05 km²0% commune
- Seythenex0.03 km²0% commune
- Saint-Julien-Mont-Denis0.01 km²0% commune
- Le Châtel0.01 km²0% commune
- Saint-Martin-de-la-Porte0.01 km²0% commune
- Bessans0.00 km²0% commune
- Le Grand-Bornand0.00 km²0% commune
30 intersecting protected areas
Massif de la Vanoise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
244.92 km² overlap
La Vanoise
IUCN Not ReportedSpecial Protection Area (Birds Directive)
237.93 km² overlap
Vanoise
IUCN IINational Park - Core Area
235.83 km² overlap
National Park - Buffer zone/Area of adhesion
205.55 km² overlap
Massif Des Bauges
IUCN VRegional Nature Park
99.02 km² overlap
Réseau de vallons d'altitude à Caricion
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
54.19 km² overlap
Massif de la Lauzière
IUCN Not ReportedSpecial Protection Area (Birds Directive)
48.59 km² overlap
Massif de la Lauzière
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
48.59 km² overlap
Grande Sassière
IUCN IVNational Nature Reserve
22.60 km² overlap
21 more protected areassorted by overlap area
Partie orientale du massif des Bauges
IUCN Not ReportedSpecial Protection Area (Birds Directive)
21.23 km² overlap
Partie orientale du Massif des Bauges
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.23 km² overlap
Les Aravis
IUCN Not ReportedSpecial Protection Area (Birds Directive)
13.44 km² overlap
Les Aravis
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.44 km² overlap
Plan De Tueda
IUCN IVNational Nature Reserve
11.44 km² overlap
Tignes-Champagny
IUCN IVNational Nature Reserve
11.23 km² overlap
Massif de la Tournette
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.18 km² overlap
Hauts De Villaroger
IUCN IVNational Nature Reserve
9.94 km² overlap
Adrets de Tarentaise
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.85 km² overlap
Les Bauges
IUCN IVNational Hunting and Wildlife Reserve
7.84 km² overlap
Les Aravis
IUCN IVBiotope Protection Order
5.70 km² overlap
Plateau De Very Et Du Sangle
IUCN IVBiotope Protection Order
4.96 km² overlap
La Bailletaz
IUCN IVNational Nature Reserve
4.85 km² overlap
Le Petit Mont Blanc
IUCN IVForest Managed Biological Reserve
3.89 km² overlap
La Dent Du Villard
IUCN IVForest Managed Biological Reserve
3.10 km² overlap
Combe Des Moulins
IUCN IVBiotope Protection Order
3.01 km² overlap
Tourbière Des Saisies
IUCN IVBiotope Protection Order
2.89 km² overlap
Tourbière et lac des Saisies
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.88 km² overlap
Regional Nature Reserve
2.88 km² overlap
Special Areas of Conservation (Habitats Directive)
2.70 km² overlap
Biotope Protection Order
2.44 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 074 distinct species · 1 190 192 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
3,7°C
Annual rain
1 424mm
Moisture idx (CMI)
0,50
Runoff
606mm/an
PET
633mm
AET
581mm
Mean slope
22,7°
Water table
746cm
Forest
70%
Crops
2%
Urban
2%
Protected
44%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)