Vasishta Nadi, named after the Hindu sage Vasishtha, originates from Salem district, flows through Kurchi, Belur, Yethapur, Pethanaickenpalayam, Attur, Kattukottai, Manivizhundhan North between South, Deviyakurichi, Pattuthurai, Thalaivasal, Aragalur, Sitheri and Cuddalore district. This river flows in Cuddalore and joins Sweata Nadi before flowing into the Bay of Bengal. Dams on the river are located at Attur and Periyeri. Check dams are constructed at Attur, Thalivasal and Periyeri/Aragalur.