Seine Commercial craft (barges and push-tows) can use the river from Marcilly-sur-Seine, to its mouth. At Paris, there are 37 bridges. The river is only above sea level from its mouth, making it slow flowing and thus easily navigable. The Seine Maritime, from the English Channel at Le Havre to Rouen, is the only portion of the Seine used by ocean-going craft. The tidal section of the Seine Maritime is followed by a canalized section ("Basse Seine") with four large multiple locks until the mouth of the Oise at Conflans-Sainte-Honorine (170 km). Smaller locks at Bougival and at Suresnes lift the
Seine River Diversion station, and to the Calm and Sturgeon Falls generating stations further downstream built at the same time. In 1943, the Seine River Diversion was undertaken to enable the open pit mining of a high-grade body of iron ore under the middle arm of Steep Rock Lake by Inland Steel Company and its subsidiary Caland Ore Canada. The diversion had several elements: In 1952, several additions were undertaken: There is one named tributary on the diversion: Hardtack Creek enters Finlayson Lake as a right tributary of the Seine River. Seine River Diversion The Seine River Diversion is a river diversion in