The Cher ( SHAIR, French: [ʃɛʁ] ; Occitan: Char) is a river in central France, a left tributary of the Loire, with a length of 365.1 km (226.9 mi), and a basin area of 13,718 km2 (5,297 sq mi). The source is in the Creuse department, north-east of Crocq. It joins the river Loire at Villandry, west of Tours.
The river suffered a devastating flood in 1940, which damaged the Château de Chenonceau, which spans the river, and other structures along the banks. It owes its name to the pre-Indo-European root kʰar 'stone'.

Quelle: Wikipedia