Entry
The Seine — River of the Paris Basin, from the Langres plateau to the Channel
Rising on the Langres plateau, it drains most of the Paris Basin, receives the Aube, the Yonne at Montereau, the Marne and the Oise, passes through Paris and reaches the Channel at Le Havre. Its meanders and gentle slope have made it, since antiquity, a trade route rather than an obstacle. (Editorial synthesis)
The Seine is 776 km long (measurement undated). (source: Larousse)
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