Resumen de Une grande ville et un bassin: Paris et la Seine
Paris owes its origins and development to its crossroads position on the Seine. Conversely, the river has been completely transformed by the requirements of the city. Not only has it been developed to respond to navigational needs, but also the profile and flow of its tributaries have been modified to allow wood used for heating to be floated downstream. This latter constraint no longer exists, but treatment of waste water has made the works at Achères into a man made tributary having a constant discharge which attains 25 cusecs.
