The High Court of Karnataka recently banned all types of mining and quarrying activities within a 20-km radius of the historic Krishnarajasagar (KRS) dam in Mandya district.
About Krishna Raja Sagara (KRS) Dam
- It is a type of gravity dam located below the confluence of the river Kaveri with its tributaries, Hemavati and Lakshmana Tirtha, in the district of Mandya in Karnataka.
- The dam was constructed during the rule of the Maharaja of Mysore, Krishnaraja Wadiyar IV, and it was named in his honor.
- The construction of the KRS Dam began in 1911 and was completed in 1931.
- The dam was designed by Sir M. Visvesvaraya, a famous Indian engineer (often referred to as the ‘architect of modern Mysore’ or ‘father of planning in India’).
- The creative beautification of the whole dam complex has been the achievement of Sir Mirza Ismail, the then Dewan of the princely State of Mysore.
- The water from the dam is used for irrigation in Mysore and Mandya and is the main source of drinking water for Mysore, Mandya, and Bengaluru city.
- It also ensures power supply to the Shivanasamudra hydroelectric power station.
- The water released from this dam flows into the state of Tamil Nadu and is stored in the Mettur dam in the Salem district.
- It was built using a mixture of surki mortar and limestone.
- It is 2,621 meters (8,600 feet) long and 40 meters (130 feet) high.
- Its reservoir is about 130 sq. km, which was the largest in Asia at the period when it was built.
- It was the first dam to install automated crest gates.
- Brindavan Gardens, an ornamental garden, is attached to the dam.
- The garden is designed based on the Shalimar Gardens of Kashmir in the Mughal style.
Q1) What is a Gravity Dam?
A gravity dam is a type of dam structure designed to withstand the force of water pressure solely through its weight. It relies on its massive weight and resistance to sliding to hold back the force of the water and maintain stability. Gravity dams are commonly built in locations where there is a solid foundation of bedrock or rock formations that can support their weight effectively.