The Estéron is a river located in the departments of Alpes-de-Haute-Provence and Alpes-Maritimes, in the Provence-Alpes-Côte d’Azur region (France).

It is the third largest tributary — on the right bank — of the Var river (after the Tinée and the Vésubie).

62 km long (120 km with its tributaries), its source is located at an altitude of 1,600 meters under Mont Teillon (which culminates at 1,893 m).

It first forms a Mediterranean torrent fed by various tributaries that have dug a sometimes very steep valley, then it widens. Its course is generally oriented from west to east (except on the Clue de Saint-Auban section, which is oriented north-south).

The waters are often clear, fresh, well oxygenated and rather mineralized. Depending on the part of the watercourse, they are of average quality (classified two downstream of Saint-Auban and downstream of Roquestéron) to good (classified 1B on the rest of its course).

The Estéron river crosses twenty communes:

From upstream to downstream: Soleilhas (source), Saint-Auban, Briançonnet, Gars, Les Mujouls, Collongues, Sallagriffon, Le Mas, Aiglun, Sigale, La Roque-en-Provence, Roquestéron, Conségudes, Pierrefeu, Les Ferres, Toudon, Bouyon, Gilette, Le Broc, Saint-Martin-du-Var.

The narrow gorges Saint-Auban (called clues) are located at the source of the Estéron river, on the border between the Verdon and Préalpes d’Azur regional nature parks.

Installed between two cliffs of 150 meters high, this canyon offers a rich route of jumps, climbing and toboggan runs in incredible basins.

Saint-Auban is a commune located in the Alpes-Maritimes department in the Provence-Alpes-Côte d’Azur region.

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