Ardèche is a tributary of the river that has a mouth at what body of water?
Ardèche (river) The Ardèche (Occitan: "Ardecha" ) is a 125 km long river in south-central France, a right-bank tributary of the River Rhône. Its source is in the Massif Central, near the village of Astet. It flows into the Rhône near Pont-Saint-Esprit, north-west of Orange. The river gives its name to the French department of Ardèche.
Seugne The Seugne (French: "la Seugne" ) is an 82.4 km long river in the Charente-Maritime département, in western France, left tributary of the Charente. Its source is in the commune of Montlieu-la-Garde, 2 km west of the village. It flows generally north-northwest.