The Isère is a 286 km long river in southeastern France, in the Rhône-Alpes région. Its source is in the Alps on the border with Italy, near the ski resort Val d'Isère. It flows into the river Rhône (left bank) in Pont-de-l'Isère, a few km north of Valence. Its upper valley is called Tarentaise.
The Isère flows through the following départements and cities:
Tributaries include: