Camargue Storm Causes 250-Ton Loss of Fleur de Sel for Aigues-Mortes Salt Producers

Under the Camargue sun, thousands of tons of salt slowly emerge from the evaporation of seawater. Yet, on July 25, 2026, a few hours of rain disrupted this natural mechanism. How could a simple thunderstorm jeopardize such a precious harvest?

In Aigues-Mortes, a vast white landscape hides a centuries-old industry

Just a few kilometers from the medieval walls of Aigues-Mortes, the landscape seems to belong to another planet. Pink expanses mingle with striking white mountains, under the gaze of flamingos. Yet this spectacular backdrop harbors a very real activity: sea salt production, practiced in the Camargue since antiquity, long before modern installations appeared.

In these vast basins, the sun and the mistral do most of the work. Seawater gradually evaporates, until crystals can form. The site typically produces nearly 240,000 tonnes of salt per year. But this impressive output rests on a surprisingly fragile meteorological balance, especially during the summer.

On July 25, a torrential downpour upends weeks of patience and labor

On July 25, 2026, the sky suddenly changed its face. In a few hours, nearly 80 millimeters of rain fell over the basins. For vacationers, it was just a fierce thunderstorm. For the salt workers, it was a catastrophe: the fresh water dilutes the brine essential for crystallization.

The fleur de sel is particularly vulnerable. Unlike coarse salt, it forms as a delicate film of crystals on the water’s surface when conditions are favorable. A change in saline concentration is enough to interrupt its formation. Hence, continuing this meticulous hand harvest becomes impossible.

According to Alain Berthelot, production manager interviewed by Objectif Gard, the teams had to drain the excess water and restore the basins’ salinity. Harvest eventually resumed in August. The reported loss stands at 250 tonnes of fleur de sel lost. A substantial amount for a product whose production directly depends on natural conditions.

Behind every grain of fleur de sel lies a know-how that machines cannot replace

Salt production may seem almost magical, but it follows precise physical rules. The more water evaporates, the more dissolved salts concentrate. When conditions become favorable, crystals appear. Fleur de sel requires special care: its manual harvest demands delicate gestures and an in-depth knowledge of the basins.

This know-how now enjoys official recognition. Since February 2024, the designation “Sel de Camargue / Fleur de sel de Camargue” has an IGP, according to the Institut national de l’origine et de la qualité. This distinction protects a product tied to its territory, but it cannot, of course, shield it from the whims of the sky.

Beyond the lost harvests, Camargue also seeks to reinvent its natural future

The storm reminds us how human activities remain dependent on natural balances. Yet Camargue is also testing another way of living with its landscapes. Between 2008 and 2012, 6,527 hectares of former salt pans were acquired by the Conservatoire du littoral, mainly near Salin-de-Giraud, to restore lagoon environments.

On these territories, some levees are no longer maintained as they once were. The objective is especially to give water more freedom, while promoting natural habitats. The Parc naturel régional de Camargue, Tour du Valat, and the National Society for the Protection of Nature participate in this particular management.

The challenge goes far beyond the salt marshes. According to the INAO, the lagoons of the Aigues-Mortes salt works host more than 200 bird species. Between economic activity, biodiversity, and rising sea levels, this territory must navigate several imperatives. A fascinating reality: where a few hours of rain can upend a harvest, the future of the coastline is decided over decades.