
The Durance rises near the Montgenèvre pass and flows into the Rhône near Avignon. It feeds lake Serre-Ponçon and is a real asset to the region's economy, thanks to the host of activities it supports: water sports, hydroelectricity and agriculture. Over 320 kilometres long, it is the most important river in Provence. In the past, the Durance was reputed to be impassable, due to its strong flow and great width.