HydroBASINS lev08 watershed · #2080547150
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 2 administrative regions : Isère, Savoie
Sub-basin area
594,2km²
Upstream area
5 810,8km²
Discharge
88,67m³/s
Mean elev.
813m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Isère306 km²
- Bassin du Bréda232 km²
2 dept-equivalent regions (GADM L2)
- 595.0 km²99.9% of basin
- 0.6 km²0.1% of basin
70 communes (GADM L5)Available for FRA, RWA
- Theys36.12 km²100% commune
- Saint-Martin-d'Uriage35.41 km²100% commune
- Revel28.24 km²97% commune
- Sainte-Agnès26.94 km²99% commune
- Laval24.95 km²99% commune
- Saint-Pierre-d'Allevard20.49 km²76% commune
- Sainte-Marie-du-Mont18.79 km²77% commune
- La Combe-de-Lancey18.71 km²100% commune
- Les Adrets16.46 km²100% commune
- Saint-Bernard16.41 km²75% commune
- Saint-Ismier14.83 km²100% commune
- Crolles14.58 km²100% commune
- Goncelin14.54 km²100% commune
- Meylan13.38 km²100% commune
- Grenoble12.50 km²69% commune
- Le Touvet11.57 km²100% commune
- Pontcharra10.87 km²66% commune
- Saint-Mury-Monteymond10.69 km²100% commune
- Saint-Martin-d'Hères9.53 km²100% commune
- La Terrasse9.07 km²100% commune
- Saint-Nazaire-les-Eymes8.77 km²100% commune
- Le Cheylas8.66 km²100% commune
- Saint-Hilaire8.35 km²100% commune
- Saint-Vincent-de-Mercuze8.06 km²100% commune
- La Buissière7.53 km²100% commune
- Bernin7.44 km²100% commune
- Gières7.28 km²100% commune
- Tencin7.12 km²100% commune
- Barraux7.02 km²65% commune
- Brié-et-Angonnes6.85 km²69% commune
- Lumbin6.82 km²100% commune
- Froges6.76 km²100% commune
- Montbonnot-Saint-Martin6.71 km²100% commune
- Herbeys6.67 km²82% commune
- Saint-Pancrasse6.60 km²100% commune
- Chamrousse6.56 km²53% commune
- Échirolles6.43 km²79% commune
- Morêtel-de-Mailles6.40 km²100% commune
- Biviers6.24 km²100% commune
- La Tronche6.22 km²100% commune
- Murianette6.11 km²100% commune
- Le Versoud6.02 km²100% commune
- Villard-Bonnot5.80 km²100% commune
- Domène5.69 km²100% commune
- Vaulnaveys-le-Haut5.18 km²31% commune
- Le Champ-près-Froges4.95 km²100% commune
- Corenc4.86 km²81% commune
- Eybens4.67 km²100% commune
- Saint-Jean-le-Vieux4.65 km²100% commune
- Jarrie4.60 km²33% commune
- Venon4.12 km²100% commune
- Hurtières3.16 km²100% commune
- La Pierre3.09 km²100% commune
- Sainte-Marie-d'Alloix2.98 km²100% commune
- Le Sappey-en-Chartreuse2.90 km²20% commune
- La Flachère2.85 km²100% commune
- Bresson2.64 km²100% commune
- Poisat2.37 km²100% commune
- Saint-Pierre-de-Chartreuse2.18 km²3% commune
- Saint-Maximin2.11 km²21% commune
- Chapareillan1.89 km²6% commune
- Champagnier1.76 km²26% commune
- Le Pont-de-Claix1.21 km²22% commune
- La Ferrière1.14 km²2% commune
- Allemond0.91 km²2% commune
- Saint-Pierre-d'Entremont0.62 km²3% commune
- Saint-Martin-le-Vinoux0.43 km²4% commune
- Quaix-en-Chartreuse0.07 km²0% commune
- Allevard0.04 km²0% commune
- Pinsot0.02 km²0% commune
14 intersecting protected areas
Chartreuse
IUCN VRegional Nature Park
109.80 km² overlap
Special Areas of Conservation (Habitats Directive)
21.85 km² overlap
Hauts de Chartreuse
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.86 km² overlap
Hauts De Chartreuse
IUCN IVNational Nature Reserve
13.39 km² overlap
Marais De Montfort
IUCN IVBiotope Protection Order
0.86 km² overlap
Biotope Protection Order
0.48 km² overlap
Ile Arnaud
IUCN IVBiotope Protection Order
0.23 km² overlap
Marais De La Frette
IUCN IVBiotope Protection Order
0.19 km² overlap
Marais Des Seiglieres
IUCN IVBiotope Protection Order
0.15 km² overlap
5 more protected areassorted by overlap area
Étang De Haute-Jarrie
IUCN IVRegional Nature Reserve
0.11 km² overlap
Tourbiere Du Poutaz
IUCN IVBiotope Protection Order
0.10 km² overlap
Marais Des Bruns
IUCN IVBiotope Protection Order
0.10 km² overlap
Tourbiere de Prabert
IUCN IVBiotope Protection Order
0.02 km² overlap
coteaux des perilles
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 262 distinct species · 661 810 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 l'Isère : 22 espèces reliées par 79 interactions GloBI sur 5 types (connectance 22.5%, filtre Serrano α=0.2). 5 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°
8,5°C
Annual rain
1 030mm
Moisture idx (CMI)
0,14
Runoff
536mm/an
PET
842mm
AET
667mm
Mean slope
15,8°
Water table
475cm
Forest
77%
Crops
3%
Urban
24%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)