The river has been divided near Heusden into the Afgedamde Maas on the right and the Bergse Maas on the left.
=== Porečje ====== Upravne enote in kraji ===* Val d'Aran (Španija): Vielha* Haute-Garonne: Saint-Béat, Montréjeau, Saint-Gaudens, Cazères, Carbonne, Muret, Portet-sur-Garonne, Toulouse* Tarn-et-Garonne: Castelsarrasin* Lot-et-Garonne: Agen, Marmande* Gironde (33) : La Réole, Saint-Macaire, Langon, Cadillac, Podensac, Villenave-d'Ornon, Bègles, Bordeaux, Floirac, Cenon, Lormont, Blaye, Le Verdon-sur-Mer* Charente-Maritime: Royan