Tarn (river) a mean flow of approximately . The Millau Viaduct spans the valley of the Tarn near Millau, and is now one of the area's most popular attractions. The tributaries of the Tarn include: The Tarn separates the Narbonne and Aquitaine basins. The Tarn passes through the following departments and towns: The Millau Viaduct, the tallest bridge in the world, carrying the A75 autoroute across the Tarn Gorge near Millau, opened in December 2004. The Tarn is famous for its brutal floodings, which are the most dangerous in Europe along with the Danube. The flooding of March 1930 saw the Tarn
Le Truel Le Truel Le Truel () is a commune in the Aveyron department in southern France. The village was in the ancient province of Rouergue where they spoke in the "rouergat" patois of Occitan. The commune is on the southern edge of the Massif Central. The hamlets to the north have commanding views of the Cevennes and the Millau Viaduct, which is to the west. The commune is approached along the D200 which connects it to the A75 autoroute. The D200 runs alongside the Tarn which has been dammed and provides the power for two hydro-electric generating plants, Jourdanie and Le