Étang de Berre

Infobox_lake
lake_name = Étang de Berre
image_lake = Port Istres 2006.jpg
caption_lake = port at Istres
image_bathymetry =
caption_bathymetry =
location = France
coords = coord|43|26|45|N|5|06|50|E|type:waterbody_region:FR_source:nlwiki|display=inline,title
type =
inflow = Arc, Touloubre, La Cadière-d'Azur, canal de la Durance
outflow = canal de Caronte, canal du Rove
catchment = 1,700 km² (natural)
basin_countries = France
length =
width =
area = 155.3 km²
depth =
max-depth =
volume = 900 mio m3
residence_time =
shore =
elevation = 0.4 m
islands =
cities = The Étang de Berre (in Provençal Occitan: "estanh de Bèrra / mar de Bèrra" according to classical orthography, "estang de Berro / mar de Berro" according to Mistralian orthography) is a body of water adjacent to the Mediterranean to the west of Marseille.

Created by the rise in water levels at the end of the last ice age, this small inland sea is composed of three parts: the principal body of water, the "Étang de Vaïn" to the east and the "Étang de Bolmon" to the south-east.

The Étang de Berre is fed with fresh water by the rivers Arc, Touloubre and La Cadière-d'Azur and – since 1966 – by the "canal de la Durance". Two canals link it to the sea: the "canal de Caronte" leading towards Port-de-Bouc and the "canal du Rove" which leads towards L'Estaque. However the underground portion of the latter is blocked by a rock fall.

Ten communes border the Étang de Berre: Istres, Miramas, Saint-Chamas, Berre-l'Étang, Rognac, Vitrolles, Marignane, Châteauneuf-les-Martigues, Martigues and Saint-Mitre-les-Remparts.

The ancient name of the Étang de Berre was "Stagnum Mastromela", according to Pliny the Elder (Book III [34] ).