The territory of the municipality includes a significant portion of the Trient valley (along with the municipality of Finhaut) and two of its important side valleys: the entire Vallon d'Emaney (drained by the Triège) and the upper section of the Vallée de Barberine (drained by the Barberine and the Eau Noire) who is notably occupied by the artificial lake of Émosson. A small part of the territory of the municipality is not drained by the river Trient: it is the Vallon de Van, drained by the Salanfe who ends directly in the Rhone.
