Mondragon is a commune in the Vaucluse department in the Provence-Alpes-Côte d'Azur region in southeastern France. It is known primaril…Mondragon is a commune in the Vaucluse department in the Provence-Alpes-Côte d'Azur region in southeastern France. It is known primarily for the large Donzère-Mondragon Dam across the river Rhône named for it and the town of Donzère.