Flood prevention: Cannes Lérins launches new retention basin

The agglomeration is investing 150 million euros in risk prevention, with the Carimaï project scheduled for late 2028.

Aerial view of a large stormwater retention basin under construction between Cannes and Le Cannet, in the Alpes-Maritimes.
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Aerial view of a large stormwater retention basin under construction between Cannes and Le Cannet, in the Alpes-Maritimes.

The Cannes Lérins Agglomeration is enhancing its fight against floods with the commencement of construction for the Carimaï stormwater retention basin, a significant investment for territorial protection.

The Cannes Lérins Agglomeration presented an annual progress report on its flood prevention actions. Committed to this cause since 2018 with its Flood Prevention Action Program (PAPI), it represents over 150 million euros in investments to bolster the protection of residents and their property.
In this context, David Lisnard announced the start of construction for the Carimaï stormwater retention basin. This structure, located between Cannes and Le Cannet on a renatured site, will have a storage capacity of 70,000 m³ of water.
Work on this major project, aimed at better protecting the area against heavy rainfall events, will begin in October, with commissioning scheduled for late 2028.
Based on information from the official source: Communauté d'agglomération Cannes Pays de Lérins (30/09/2026)