The Dourbie river is a 45 mile (72 km) long river in southern France. It is a left tributary of the Tarn. Its source is north of Le Vigan (Gard), in the Cévennes. It flows generally west through the following departments and towns: Gard: Dourbies Aveyron: Saint-Jean-du-Bruel, Nant The Dourbie flows into the Tarn at Millau.