**6. Acknowledgments**

The authors would like to thank EDF-R&D, French Ministry of Ecology (DREAL Centre), SNCF and Fugro-Geoid for supporting a part of the works mentioned above.

This work has been partly supported by the European Community's Seventh.

Framework Programme through the grant to the budget of the FloodProBE project, and by EDF-R&D through the grant of the PAREOT project and the INTREPHYD project.
