 The Durance river, a tributary of the Rhône, has its source in the Alps near Briançon.It flows south-west through Embrun, Sisteron, Manosque, Cavaillon, and Avignon, where it meets the Rhône.The Verdon River is a tributary of the Durance, rising at an altitude of 2,400 metres in the southwestern Alps near Barcelonette, and flowing southwest for 175 kilometres through the Alpes-de-Haute-Provence and Var (départements) before it reaches the Durance at near Vinon-sur-Verdon, south of Manosque.