Per Aru

Per Aru
Location
CountrySri Lanka
ProvinceNorthern Province
DistrictsVavuniya, Mullaitivu
Physical characteristics
Source 
 • locationVavuniya District
MouthNanthi Lagoon
 • location
Mullaitivu District
Length32 km (20 mi)
Basin size374 km2 (144 mi2)

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.