It was constructed by the Semba vettuvar Jayagonda Sozha Kongalvan in the year 1125 AD. Creating the dam consisted of carving a 20-foot wall of rock. The stones were then interlocked with iron bars and lead was used as mortar. These features, however, are not visible except in the dry season when the water level in the river drops considerably. Two channels arise from the dam, one is on the northern side of Bhavani River and the other on the southern side viz "Arakkan Kottai Channel" and "Thadapalli Channel" respectively. Lands north of Gobichettipalayam are fertile due to the flow of the Thadapalli channel. Cultivation of sugarcane and paddy are predominant in this area. The lush green fields are also a pleasure to watch.