Acheneau
General data
- Name: Acheneau
- Water system: Loire
- Water type: River
- Progression: Loire -> Bay of Biscay -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: Europe
- Countries: France
The Acheneau is a French river in the Loire-Atlantique Department, in the Pays de la Loire region, a tributary on the left bank of the Loire which is fed by the Lac de Grand-Lieu.
Beginning at the north of the Lac de Grand-Lieu, the Acheneau is joined from the south by the Tenu at Saint-Léger-les-Vignes. After passing through Port-Saint-Père, it passes Cheix-en-Retz and the confluence of the Blanche, also from the south, then reaches the outskirts of Rouans, from which it takes the 4 km route of the Buzay canal which, after crossing the Martinière canal, joins the Loire at the end of a 29.8 km route.