Which Indian Dam Is Considered One of the World's Oldest Water-Regulation Structures?
The Kallanai Dam, also known as the Grand Anicut, is one of the world's oldest water-regulation structures still in use. It is located across the Kaveri River in Tamil Nadu and is traditionally attributed to the Chola king Karikala Chola, who is believed to have built it around the 2nd century CE.
Unlike modern dams designed primarily to store large quantities of water, Kallanai was constructed mainly to divert river water into irrigation channels. This helped distribute water across the fertile Kaveri Delta, supporting agriculture and the livelihoods of local communities. The structure was built using large stones and demonstrates the advanced engineering skills of ancient Indian builders.
Even after nearly two millennia, Kallanai continues to play an important role in irrigation. Its enduring use makes it a remarkable example of India's early water-management systems and engineering heritage.
