Clain
| Clain | |
|---|---|
| Location | |
| Country | France | 
| Physical characteristics | |
| Source | |
| • location | Poitou | 
| Mouth | |
|  • location | Vienne | 
|  • coordinates | 46°46′52″N 0°32′26″E / 46.78111°N 0.54056°E | 
| Length | 144 km (89 mi) | 
| Basin size | 3,145 km2 (1,214 sq mi) | 
| Basin features | |
| Progression | Vienne→ Loire→ Atlantic Ocean | 
The Clain (French pronunciation: [klɛ̃]; Occitan: Clen) is a 144 km (89 mi) long river in western France, a left tributary of the river Vienne. Its source is near Hiesse, Charente.
The Clain flows generally north, through the following departments and towns:
It joins the Vienne near Châtellerault, Cenon-sur-Vienne.
Among its tributaries are the Boivre, the Clouère and the Vonne.