Eduqo

Indian Geography›Ch 3: Drainage & Climate›Dams and River Projects

3.4

Dams and River Projects

5 min

Master major Indian river valley projects and reservoirs for competitive exams.

1

Golden Rule

Multi-purpose river valley projects like Bhakra Nangal and Hirakud control floods, generate hydroelectricity, and supply irrigation water. Memorizing their exact rivers, states, and key features is mandatory for scoring high in geography sections.

2

Exam Importance

  • Direct questions asked on river-dam mapping in SSC and State PSC.
  • Tehri and Bhakra heights frequently appear in Defence and Police exams.
  • DVC was India's first river valley project, making it a high-yield fact.

Memory Hooks

  • Hirakud is on Mahanadi: 'Maha' (great) king sits on the longest diamond-like dam.
  • Tehri is Highest: 'T' for Tehri stands tall at the top on Bhagirathi river.
  • Sardar Sarovar is on Narmada flowing through Gujarat.
3

Major Dams Data

Dam NameRiverState
Bhakra NangalSutlejHimachal / Punjab
HirakudMahanadiOdisha
Tehri DamBhagirathiUttarakhand
Sardar SarovarNarmadaGujarat
4

Project Highlights

Tehri Dam

(Highest Dam)

Tehri Dam: Highest Dam

Highest Dam

Tehri is India's highest earth and rock-fill dam located on Bhagirathi river.

Hirakud

(Longest Dam)

Hirakud: Longest Dam

Longest Dam

Hirakud Dam on Mahanadi in Odisha is one of the world's longest earthen dams.

DVC

(First Valley Project)

DVC: First Valley Project

First Valley Project

Year[ 1948 ]

Damodar Valley Corporation was established in 1948 as India's first multipurpose project.

Nagarjuna

(Krishna River)

Nagarjuna: Krishna River

Krishna River

Nagarjuna Sagar Dam is a massive masonry dam built across the Krishna river.

5

Exam Traps

Bhakra Nangal is in Punjab onlyMainly Himachal/Punjab border

Bhakra dam is in Himachal Pradesh, while Nangal dam is in Punjab.

Tehri is on Alaknanda riverTehri is on Bhagirathi river

Always distinguish between Bhagirathi and Alaknanda where Tehri is built.

Hirakud is the highest damHirakud is the longest dam

Do not confuse length with height; Tehri is highest, Hirakud is longest.

6

Quick Test

Q1.Hirakud Dam is constructed across which of the following rivers?

Q2.Which is India's highest earth and rock-fill dam?

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