Étang de Lavalduc
| Étang de Lavalduc | |
|---|---|
| Location | Bouches-du-Rhône, Provence, France |
| Coordinates | 43°27′51″N 4°58′8″E / 43.46417°N 4.96889°E |
| Type | lagoon |
| Basin countries | France |
| Surface area | 3.54 km2 (1.37 sq mi) |
| Surface elevation | −10 m (−33 ft) |
Étang de Lavalduc, or La Valduc, is a saltwater lagoon with varying levels of salinity in the Mediterranean Sea, west of the Étang de Berre and north of Fos-sur-Mer. The property belonging to the Salins du Midi company, which has made it a storage tank for brine. It is located in three municipalities: Saint-Mitre-les-Remparts, Istres and Fos-sur-Mer, Bouches-du-Rhône. Its coloring of an iridescent pink blue is due to the presence of small crustaceans such as Artemia salina.
Located at an average altitude of about 10 m below sea level, it is the lowest point in France.