Tidal bore is a body of water that, during exceptionally high sea tides, rushes up some rivers and estuaries near a coast where there is a large tidal range and the incoming tide is confined to a narrow channel.
The Seine rises at 1,545 feet.
Years of river management (canals, dams, irrigation systems, dredging) eliminated the mascaret. Before the French began managing the Seine, the unpredictable mascaret was responsible for the loss of hundreds of ships. The wave would rush up the river, upsetting cargo ships and destroying docks.
