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RAS question

Tehri Dam, India's tallest dam, is on which river?

Correct answer: (D) Bhagirathi.

Tehri Dam, India's tallest dam, is built on the Bhagirathi river in Uttarakhand.

  1. (A)

    Ganga

  2. (B)

    Alaknanda

  3. (C)

    Yamuna

  4. (D)

    Bhagirathi

Explanation

Tehri Dam is associated with the Bhagirathi, not the main Ganga channel or the Alaknanda. Uttarakhand Tourism identifies the New Tehri dam as standing on the Bhagirathi river and describes it as the highest of its kind in India. Tehri Dam is a 260.5 m rock-fill and earth-fill dam in Uttarakhand, with Tehri Lake as its reservoir. Its location in Tehri Garhwal and its hydroelectric, drinking-water and irrigation roles make it important as both a river-location fact and a major dam site.

Why the other options are wrong

  • (A) Ganga is too broad because the dam is specifically on the Bhagirathi, a tributary linked to the Ganga system.
  • (B) Alaknanda is another major Himalayan river in Uttarakhand, but Tehri Dam stands on the Bhagirathi river.
  • (C) Yamuna is a separate river system, while Tehri Dam is identified with the Bhagirathi in Tehri Garhwal.

Concept

This tests the Indian geography theme of major dams, river systems and hydroelectric projects. RAS often returns to such sites because one fact links physical geography, infrastructure and state-level location awareness.

Source

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