This Monday, October 13, 2025, a new full-scale crisis exercise will be carried out in the center of Paris, to test the measures to be put in place and the reactions of residents, in the event of major flooding of the Seine.
Two years of work culminate in a major test, carried out this Monday, January 13, 2025 in Seine-et-Marne: discover the giant new reservoir designed to protect Paris and the surrounding region from flooding on the Seine.
While the level of the Seine has remained high all winter, it is likely to rise again this weekend, with an impact on the Paris Marathon route on Sunday, and a test run of the river parade for the opening ceremony of the Olympic Games cancelled.
With the heavy rains of the last few days, the level of the Seine is close to 3m20, a high but rather normal height for the season, thanks to the dams that hold back the water upstream, to prevent Paris from being drowned.
On Tuesday August 16, 2022, in the evening, an unexpected harsh storm hit Paris, flooding the streets in the blink of an eye. Since then, the Seine’s level increased by 35cm (13.77in) in comparison with the past few months.