The Seine (pronounced in French) is a major river of north-western France, and one of its commercial waterways. It is also a tourist attraction, particularly within the city of Paris.
Another proposed etymology posits that Sequana is the Latin version of Gaulish Isicauna. Is-Icauna would be the diminutive of Icauna, which was the Gaulish name of the Yonne River. The ancient Gauls considered the Seine to be a tributary of the Yonne, which indeed presents a greater average discharge than the Seine (the river flowing through Paris should be called Yonne if the standard rules of geography were applied). Icauna comes from the Pre-Indo-European roots inka -onna. Further research will be needed to decide between both etymologies.
Further downstream in what is now Normandy, the Seine was known as Rodo, or Roto, which is a traditional Celtic name for rivers, and is also the original name of the Rhône River (see Rhône article for further explanations). This is proved by the name of Rouen, which was Rotomagos in Gaulish, meaning "field, plain (magos in Gaulish, whose meaning evolved into "market") of the Roto".
The tidal section of the river, from Le Havre to well beyond Rouen, is followed by a canalized section with four large multiple locks until the mouth of the Oise river at Conflans-Sainte-Honorine. Then two more multiple locks at Bougival / Chatou and at Suresnes lift the vessels to the level of the river in Paris, where the mouth of the Marne River is located. Upstream from Paris seven more locks ensure navigation to Saint Mammès (where the Loing mouth is situated). Through an eighth lock the river Yonne is reached at Monterau. From the mouth of the Yonne, larger ships can continue upstream the Seine till Nogent-sur-Seine. From there on, the river is only navigable for small craft. All navigation ends abruptly at Marcilly-sur-Seine, where the ancient Canal de la Haute Seine used to allow vessels to continue all the way to Troyes. This canal has been abandoned for many years now. (Source: NoorderSoft Waterways Database)
The average depth of the Seine today at Paris is about eight metres. Until locks were installed to artificially raise the level in the 1800s, however, the river was much shallower within the city most of the time, and consisted only of a small channel of continuous flow bordered by sandy banks (visible in many illustrations of the period). Today depth is tightly controlled and the entire width of the river between the built-up banks on either side is normally filled with water. The average flow of the river is very low, only a few cubic metres per second, but much higher flows are possible during periods of heavy runoff. Special reservoirs upstream help to maintain a constant level for the river through the city, but during periods of extreme runoff significant increases in river level may occur. A very severe period of high water in January 1910 produced extensive flooding throughout the city.
Until the 1930s, a towing system using a chain on the bed of the river existed to facilitate movement of barges upriver.
Dredging in the 1960s mostly eliminated tidal bores on the river, known as “le mascaret.”
The Banks of the Seine in Paris were added to the UNESCO's list of World Heritage Sites in 1991.
Richard Parkes Bonnington, Joseph Mallord William Turner, Camille Corot, Eugène Isabey, Constant Troyon, Charles François Daubigny,
Eugène Boudin, Johan Barthold Jongkind, Claude Monet, Frédéric Bazille,
Vuillard, Vallotton, Dufy, Emile Othon Friesz, Albert Marquet,
Emilio Grau Sala, Gaston Sébire, Maurice Boitel,
Rivers of France | Seine basin
السين | Сена | Seina | Seinen | Seine | Seine | Sena | Sejno (rivero) | Seine | Sena | 센 강 | Seine | Senna | סן | Sequanus | Seine (Floss) | Seine | セーヌ川 | Seinen | Sekwana | Rio Sena | Сена (река) | Seina | Seine | Seine | Сена | Sen Nehri | 塞纳河