The
Seine ( ; , ) is a long river and an important commercial waterway within the
Paris Basin in the north of France. It rises at
Source-Seine, northwest of
Dijon in northeastern France in the Langres plateau, flowing through Paris and into the
English Channel at
Le Havre (and
Honfleur on the left bank). It is navigable by ocean-going vessels as far as
Rouen, from the sea. Over 60 percent of its length, as far as
Burgundy, is negotiable by commercial riverboats and nearly its whole length is available for recreational boating;
excursion boats offer sightseeing tours of the
Rive Droite and
Rive Gauche within the city of Paris.