How does the Seine support transportation and trade in Paris?

The Seine River serves as a vital artery for transportation and trade in Paris, functioning as a navigable highway that links the capital to the sea and the major maritime port of Le Havre.1

Key aspects of its role include:

• Commercial Navigation: The river is naturally navigable, allowing vessels drawing up to 10 feet (3.2 meters) to reach the quays of Paris. Commercial traffic, which includes heavy petroleum products and building materials, is primarily directed to the port of Paris at Gennevilliers.12
• Historical Significance: The river's importance to trade dates back to the Middle Ages, when the marchandise de l’eau (river-merchants’ guild) held a monopoly on river trade, a right confirmed by royal charter in 1171.3
• Infrastructure: The river has been trained and narrowed between quays to facilitate navigation, and its connectivity is enhanced by links to other waterway systems, including the Marne and Oise rivers.1
• Modern Usage: Beyond freight, the Seine supports pleasure traffic and remains a central feature of the city's landscape, though its role in total national freight transport has declined relative to faster, land-based alternatives.24