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24-Tehri Dam- Holding the Himalayas in Concrete

Good morning friends. Today let us travel to the Garhwal Himalayas, where one of India’s tallest engineering achievements rises above the Bhagirathi River — the Tehri Dam. Standing about 260.5 meters high, Tehri Dam is one of the tallest dams in the world and the tallest in India. Built near the town of Tehri in Uttarakhand, it is an earth and rock-fill dam — a massive structure made not of solid concrete walls, but compacted layers of rock and earth engineered to withstand immense pressure. The idea of harnessing the Bhagirathi began decades ago, but construction gathered pace in the late 20th century. The project required extraordinary planning because it sits in a seismically active Himalayan zone. Engineers designed it to withstand earthquakes of high magnitude, using advanced monitoring systems and carefully layered structural design to ensure stability. Behind the dam lies the vast Tehri reservoir, stretching deep into the mountains. The project generates over 1,000 megawatts of hydroelectric power from its first stage alone, supplying electricity to several northern states. It also supports irrigation and provides drinking water to millions of people, including the national capital region. What makes Tehri remarkable is not just its height. It is the scale of coordination required — geology, hydrology, seismic science, and engineering brought together in one of the most challenging terrains in the world. Building a structure of that magnitude in the Himalayas demanded precision, endurance, and technical depth. Today, the Tehri Dam stands firmly between mountains and river, a testament to how engineering vision can rise even in the most demanding landscapes.


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Written by Shantanu 2026-02-24
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