EDF has worked with the public authorities to develop instructions for the use of discharge systems in periods of flooding. At each site,
employees are trained on a simulator and then certified to operate these tools. Two principles govern their work:
- maintain the level of the reservoir below its maximum authorised level in order to avoid submerging the dam
- ensure that the maximum flow rate from the dam never exceeds the upstream flow rate so as not to magnify the natural flood.
Only dams with large reservoirs such as the Crescent dam in the Morvan area, designed to protect Paris, are in a position to mitigate the effects of flooding.