Per Aru
| Per Aru | |
|---|---|
| Location | |
| Country | Sri Lanka |
| Province | Northern Province |
| Districts | Vavuniya, Mullaitivu |
| Physical characteristics | |
| Source | |
| • location | Vavuniya District |
| Mouth | Nanthi Lagoon |
• location | Mullaitivu District |
| Length | 32 km (20 mi) |
| Basin size | 374 km2 (144 sq mi) |
The Per Aru is a river in Northern Province, Sri Lanka. The river rises in northern Vavuniya District, before flowing north/north-east through Vavuniya District and Mullaitivu District. The river empties into Nanthi Kadal lagoon.