Aliyar also spelt Azhiyar ,Aaliyar Reservoir is a 6.48 km2 2.5 sq mi reservoir located in Aliyar village near Pollachi town in Coimbatore District, Tamil Nadu, South India. The dam is located in the foothills of Valparai, in the Anaimalai Hills of the Western Ghats.It is about 65 kilometres 40 mi from Coimbatore.
The dam offers some ideal getaways including a park, garden, aquarium, play area and a mini Theme Park maintained by Tamil Nadu Fisheries Corporation for visitors enjoyment. The scenery is beautiful, with mountains surrounding three quarters of the reservoir. Boating is also available