How will the work be managed in the event of flooding?

In the event of a major flood of the Seine and the Orge, all or part of the Centre and Seine districts of Juvisy-sur-Orge could be flooded. The tramway works along the RN7 and at the park would not be significantly impacted. On the other hand, those located in the city centre and rue Piver should be interrupted in the event of an imminent risk, in accordance with the regulations in force.

The risks associated with rising water levels have been anticipated by the Île-de-France Mobilités teams, who have set up a crisis management system specific to the work in the event of flooding. Some site facilities, such as bungalows, can be dismantled within 24 hours, staff evacuated and materials stored outside flood zones. To find out the routes to follow in the event of flooding, it is advisable to refer to the Essonne Flood Risk Prevention Plan (PPRI), which can be consulted on the Prefecture's website.

The companies in charge of the work will also be required to constantly monitor the levels of the Seine and the Orge. Alert thresholds will be defined and, in the event of exceedance, they will have to proceed with the safety and then the removal of the site facilities located in the sectors concerned.