瑟德尔河是法国的河流，位于该国西南部，河道全长68公里，发源自圣热尼德桑通格附近，流经圣昂德雷德利东、索容和拉特朗布拉德，最终在马雷内注入大西洋。

• http://www.geoportail.fr
• The Seudre at the Sandre database

The Seudre is a river in the Charente-Maritime département, southwestern France, flowing into the Atlantic Ocean. 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.