 Another unique festival associated with the temple is called "Tirukulattu velvi" which is sacrificial offering made to a man made irrigation reservoir known as a water tank.According to tradition, this festival was organized during legendary king Kullakottan in the original Koneswaram temple and was directed at the Kantalai Tank.During the festival local agriculturalists would congregate at the Kantalai Tank and offer boiled rice along with areca nut and betel leaves to the idols.