October 20, 2021

The Cosson is a river in central France that flows in the Center-Val de Loire region. It is 114.2 km long and flows into the Beuvron, which in turn joins the Loire after about 1 km.


Course of the river

The river originates in the municipality of Isdes, in the natural region of the Sologne, and originates from the Étang de la Ramellière. In its course it bathes the manor of Lude, in the municipality of Jouy-le-Potier, and the castle of Chambord, of which it feeds the moat. Arrived in the territory of Vineuil, the Cosson begins to flow parallel to the Loire until it enters the Beuvron.

Main tributaries

Déroboir (8.6 km), Bourillon (20.6 km), Canne (26.4 km), Arignan, Fonds de Rotte, Ribou.

Municipalities crossed

The Cosson crosses 18 municipalities: LoiretIsdes, Vannes-sur-Cosson, Sennely, Ménestreau-en-Villette, Marcilly-en-Villette, La Ferté-Saint-Aubin, Jouy-le-Potier, Ligny-le-Ribault. Loir-et-CherBlois, Chailles, Chambord, Crouy-sur-Cosson, La Ferté-Saint-Cyr, Huisseau-sur-Cosson, Saint-Gervais-la-Forêt, Thoury, Vineuil, Candé-sur-Beuvron.


The course of the Cosson was diverted in the seventeenth century when King Louis XIV had a canal dug to make the river flow so that it touched the garden of the castle of Chambord and formed its moat. After an interruption of the works, the river bed was cleaned and enlarged in 1730 as part of a reclamation of the castle park. The floods of the Cosson are quite frequent; particularly violent was the flood of 2016, which completely flooded the gardens of the castle of Chambord causing extensive damage.


Related items

Rivers of France

Other projects

Wikimedia Commons contains images or other files about Cosson

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