Canal de Garonne in the context of Canal des Deux Mers

Moissac (French pronunciation: [mwasak]) is a commune in the Tarn-et-Garonne department in the Occitanie region in southern France. The town is situated at the confluence of the rivers Garonne and Tarn at the Canal de Garonne. Route nationale N113 was constructed through the town and between Valence-d'Agen and Castelsarrasin. It is served by Moissac station on the Bordeaux-Toulouse line.

The Canal du Midi (French pronunciation: [kanal dy midi]; Occitan: Canal de las Doas Mars, Canal del Miègjorn [ka'nal del mjɛdˈd͡ʒuɾ]) is a 240 km (150 mi) long canal in Southern France (French: le Midi). Originally named the Canal Royal en Languedoc (Royal Canal in Languedoc) and renamed by French revolutionaries to Canal du Midi in 1789, the canal is considered one of the greatest construction works of the 17th century.

The canal connects the Garonne to the Étang de Thau on the Mediterranean and, along with the 193 km (120 mi) long Canal de Garonne, forms the Canal des Deux Mers, joining the Atlantic to the Mediterranean.