[citation needed] Findings of Central Pollution Control Board had revealed that the river is polluted by high concentrations of nitrate and chromium due to mixing of sewage water into the river stream and industrial activities in 2013.

[3] The river takes is course from Thiruvaiyaru of Thanjavur where it branches from Kaveri, travels through Kumbakonam.

It runs a distance of 11.2 km before emptying itself into the sea of Bay of Bengal at Karaikal, east of Akalanganni.

[1] The river forms the natural boundary line separating Neravy from Thirunallar on the north-west and Karaikal on the north-east.

[citation needed] The historical Novel by name "Ponniyin Selvan" that describes the life of Rajaraja Chola, written and scripted by the Tamil writer Shri.