Seudre

The Seudre () is a river in the Charente-Maritime "département", southwestern France, flowing into the Atlantic Ocean. It is long. Its source is near Saint-Genis-de-Saintonge. It flows northwest through Saint-André-de-Lidon, Saujon and La Tremblade. It flows into the Atlantic Ocean near Marennes. The lower course of the Seudre is brackish, and is used for oyster farming.