Mettur Dam, built across the Cauvery River, is one of the oldest and largest dams in India, completed in 1934. The dam forms the Stanley Reservoir, which irrigates the fertile Cauvery Delta and supports millions of farmers in Tamil Nadu. The dam is surrounded by hills, making it a picturesque location for visitors. The nearby Mettur Hydro Power Station and Tropical Garden Park are popular tourist spots. Known for its vital role in agriculture, Mettur Dam remains a symbol of Tamil Nadu’s prosperity.