Dams in India are important for managing water resources. They help with irrigation for farming, generate electricity, and control floods. India has many famous dams, each with unique features and histories. These structures reflect the country’s engineering skills and are vital for supporting agriculture and providing water to millions of people.
The Kallanai Dam, also known as the Grand Anicut, is the oldest dam in India. It is an impressive structure that has been serving the people for over 2,000 years. This dam showcases ancient engineering skills and remains essential for water management in Tamil Nadu.
Kallanai Dam is situated in the Cauvery Basin in Tamil Nadu, India. It is about 20 kilometers from the city of Tiruchirapalli, making it accessible to many people who rely on its waters.
The dam was constructed in the 2nd century AD by King Karikalan of the Chola Dynasty. This ancient structure was built using unhewn stones and a special interlocking technique that does not require cement. It reflects the advanced engineering methods of its time.
Kallanai Dam measures over 300 meters long, 20 meters wide, and 4.5 meters high. Its design is simple yet effective, allowing it to control water flow efficiently. The interlocking stone construction has allowed it to withstand the test of time.
The main purpose of the Kallanai Dam is to divert the waters of the Kaveri River for irrigation. It also helps manage floods by directing excess water from the Kaveri branch of the river into the Kollidam branch. This regulation of water has been vital for agriculture in the region.
Kallanai Dam is considered one of the oldest water diversion and regulation structures in the world. Its continuous use for over two millennia highlights its importance in managing water resources. The dam remains a key asset for farmers and communities in Tamil Nadu, supporting agriculture and sustaining livelihoods.
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