| Acheneau | |
|---|---|
 The château de Granville at Port-Saint-Père from the bridge over the Acheneau | |
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| Native name | Acheneau (French) |
| Location | |
| Country | France |
| Department | Loire-Atlantique |
| Arrondissement | Nantes |
| Physical characteristics | |
| Source | Lac de Grand-Lieu, Pays de Retz |
| • location | Saint-Aignan-Grandlieu |
| • coordinates | 47°07′57″N 01°41′52″W / 47.13250°N 1.69778°W |
| • elevation | 3 m (9.8 ft) |
| Mouth | |
• location | Loire at Le Pellerin |
• coordinates | 47°13′07″N 1°49′06″W / 47.2185°N 1.8182°W |
| Length | 29.8 km (18.5 mi) |
| Basin features | |
| Progression | Loire→ Atlantic Ocean |
| River system | Loire |
| Tributaries | |
| • left | |
| • right |
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The Acheneau (French pronunciation: [aʃno]) 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.