Hers-Mort

The Hers-Mort is a long river in southern France, a right-bank tributary of the Garonne. Its average flow rate is. The Hers-Mort rises in the Lauragais region, near the village Fonters-du-Razès, in the Aude department. It flows northwest through the following departments and towns:

It flows into the Garonne near Grenade-sur-Garonne. Its waters, augmented by the Girou which flows into its right bank, irrigate the market gardens around Toulouse. The Canal [du Midi] crosses the Hers-Mort near Villefranche-de-Lauragais via the Hers Aqueduct.