As part of the operation and management of the Marne water intake structure located in Saint-Dizier, the EPTB Seine Grands Lacs, operating hydraulic installations in the MARNE Lake Reservoir, wishes to study the behaviour of the structure for floods of decimal occurrence in order to verify its proper sizing. If the level of this type of flood is higher than the current level of protection, it wishes to carry out the necessary investigations to reduce the vulnerability of the water intake device.