Explanation: The Tehri Dam is a significant multi-purpose rock and earth-fill embankment dam located on the Bhagirathi River in Tehri district, Uttarakhand, India. It is the second highest dam in India and is a crucial part of the Tehri Hydro Development Corporation's project. The dam's primary purposes include hydroelectric power generation, irrigation, and water supply.
The construction of the Tehri Dam began in 1978 and was completed in 2006. The dam's reservoir, known as the Tehri Reservoir, has a capacity of 2.64 billion cubic meters. The dam's height is 260.5 meters, and it has a length of 575 meters. The Tehri Dam is a critical component of the Tehri Hydro Power Complex, which includes two power stations: Tehri Stage-I and Tehri Stage-II.
One of the most significant impacts of the Tehri Dam's construction was the submergence of over 100 villages. The reservoir created by the dam submerged a large area of land, leading to the displacement of thousands of people. The submergence affected the local population, flora, and fauna, causing significant environmental and social changes in the region.
The Tehri Dam project has been a subject of considerable debate due to its environmental and social impacts. The submergence of villages and the displacement of people have raised concerns about the project's sustainability and the rights of the affected communities. The dam's construction also led to the creation of a large reservoir, which has altered the local ecosystem and affected the river's natural flow.
In conclusion, the Tehri Dam is a significant hydroelectric project in Uttarakhand that has had a substantial impact on the region. Its construction led to the submergence of over 100 villages, making it a critical topic in the context of Uttarakhand's geography and environmental studies. Understanding the Tehri Dam's role and its impacts is essential for comprehending the broader implications of large-scale hydroelectric projects in India.