The Arz (Breton: Aer) is a 66.4 km (41.3 mi) long river in the Morbihan département, northwestern France.[1] Its source is at Plaudren. It flows generally east-southeast. It is a right tributary of the Oust into which it flows at Saint-Jean-la-Poterie, near Redon.
| Arz | |
|---|---|
   | |
| Location | |
| Country | France |
| Physical characteristics | |
| Source | |
| • location | Plaudren |
| • coordinates | 47°44′35″N 02°43′52″W / 47.74306°N 2.73111°W |
| • elevation | 130 m (430 ft) |
| Mouth | |
• location | Oust |
• coordinates | 47°39′21″N 02°06′40″W / 47.65583°N 2.11111°W |
• elevation | 2 metres (6.6 ft) |
| Length | 66.4 km (41.3 mi) |
| Basin size | 270 km2 (100 sq mi) |
| Discharge | |
| • average | 2.26 m3/s (80 cu ft/s) |
| Basin features | |
| Progression | Oust→ Vilaine→ Atlantic Ocean |
Communes along its course
This list is ordered from source to mouth: Plaudren, Monterblanc, Elven, Le Cours, Larré, Molac, Pluherlin, Malansac, Saint-Gravé, Peillac, Saint-Jacut-les-Pins, Saint-Vincent-sur-Oust, Allaire, Saint-Perreux, Saint-Jean-la-Poterie