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Karnataka has added another jewel to its crown with the successful completion of the Yettinahole Gravity Canal Aqueduct, now recognized as the tallest aqueduct in the world and the longest in Asia. Located near Chelur in Gubbi taluk of Tumakuru district, this monumental structure stands 40 metres tall and stretches for an impressive 10.47 kilometres, making it a landmark achievement in modern irrigation infrastructure.
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The Yettinahole project, also known as the Ettinahole Integrated Drinking Water Project, was conceptualized to address water scarcity in arid regions of southern Karnataka. The massive aqueduct carries a discharge of 3,300 cusecs of water, ensuring a steady flow across varying terrains without disturbing existing farmlands or human settlements.
World’s Tallest. Asia’s Longest. Karnataka’s Pride.
This is the story of the #Yettinahole Gravity Canal Aqueduct - standing 40 metres tall and stretching 10.47 km, it is now the tallest aqueduct in the world and longest in Asia.
- Built with advanced precast hybrid technology… pic.twitter.com/T1gRMLKZ0Z
— DK Shivakumar (@DKShivakumar)
World’s Tallest. Asia’s Longest. Karnataka’s Pride.
This is the story of the #Yettinahole Gravity Canal Aqueduct - standing 40 metres tall and stretching 10.47 km, it is now the tallest aqueduct in the world and longest in Asia.
- Built with advanced precast hybrid technology… pic.twitter.com/T1gRMLKZ0Z— DK Shivakumar (@DKShivakumar) June 29, 2025
">June 29, 2025
One of the biggest highlights is the use of cutting-edge precast hybrid technology combined with a joint treatment methodology vetted by the Indian Institute of Science (IISc) Bengaluru. This modern engineering approach enabled faster construction with minimal labour dependency and ensured maximum safety and structural stability. The aqueduct’s base foundation has been laid using open viaduct designs suited to the local soil conditions, further strengthening its durability.
Started in 2018, the project was completed by 2023 at an estimated cost of Rs 1,203.68 crore. In recognition of its technical excellence and innovative execution, the project recently bagged the prestigious INFRACON National Award (IINA Platinum 2025) from the IFDA, placing Karnataka on the global infrastructure map.
