La Baleine ~ Aigues-Mortes Salt Marshes ~ How do we produce sea salt ?
Aigues-Mortes Salt Marshes
A Salt Preserve is made up of shallow basins and salt tables where the salt is harvested.
This white gold is obtained by evaporation of water using the combined forces of the sun and wind.
Sea water entry into the salt marshes
Sea water enters into the salt marshes as from March. At this stage, it contains 29g of salt per litre.
Water circulation in the ponds
From March to August, water circulates through the basins (some of which are more than 300 hectares). Salt workers make the water circulate from one pond to another.
When the brine is saturated, salt workers send it to the crystallizers or salt tables (shallow rectangular basins). Thanks to the wind and the sun, the evaporation continues and the salt crystallizes.
The harvest
After a few months, a layer of salt, 10cm thick is formed at the bottom of the tables. The salt is harvested once a year, in September.