| Jouanne | |
|---|---|
.JPG) The Jouanne near Argentré | |
 | |
| Native name | La Jouanne (French) |
| Location | |
| Country | France |
| Physical characteristics | |
| Source | |
| • location | La Hardière |
| • elevation | 172 m (564 ft) |
| Mouth | |
• location | Mayenne |
• coordinates | 48°13′49″N 0°23′28″W / 48.23028°N 0.39111°W |
| Length | 58.5 km (36.4 mi) |
| Basin size | 422 km2 (163 sq mi) |
| Basin features | |
| Progression | Mayenne→ Maine→ Loire→ Atlantic Ocean |
The Jouanne (French pronunciation: [ʒwan]) is a 58.5 km (36.4 mi) long river in western France located in the department of Mayenne, region of Pays de la Loire. It is a tributary of the river Mayenne on the left side, and so is a sub-tributary of the Loire by Mayenne and Maine.[1]