The Vilaine is a river in Brittany, in the west of France. The river's source is in the Mayenne département (53), and flows out in the Atlantic Ocean at Tréhiguier in the Morbihan département (56). It is 225 km long. The river is joined to the Rance by means of the Vilaine canal by the commune of Evran .
Passage of the river
The river passes through 4 departments (Mayenne, Ille-et-Vilaine, Loire-Atlantique and Morbihan) and 4 main towns (Rennes, Vitré, Redon and La Roche-Bernard .
Hydrology
The river has a flow ranging between 2 and 1500 m3/s
Main tributaries
- Ille - Vaunoise
- Seiche
- Oust
- Isaac
