Correct option is C
Hirakud is the longest earthen dam in the world; it is built on the river Mahanadi in Odisha. It was the first major multipurpose river valley project since India's Independence. Some Facts about Dam
Idukki Dam - Arch Dam
Most of gravity Dam constructed in India are straight solid gravity dams. ex-Bhakra Dams. Bhakra Dam (A concrete Dam) & Rana Pratap Sagar Dam (A stone Masonry Dam) are rigid dam in India.
Best/Most economical Central Angle in an arch Dam is the one whose value is equal to 133° 34' at mid-height in constant radius dam.
5. A check Dam is a soil conservation structure.
The Tehri dam is highest dam in India. It is a multi-purpose rock & earth-fill embankment dam on the Bhagirathi river near Tehri (UK).
Some of the Major Irrigation Projects
| Name |
River |
State |
| Bhakra Nangal Project |
Sutlej |
Punjab and Himachal Pradesh |
| Beas Project |
Beas River |
Punjab, Haryana and Rajasthan |
| Indira Gandhi Canal |
Harike (Satlej and Beas) |
Punjab |
| Kosi Project |
Kosi River |
Bihar and Nepal |
| Hirakund Project |
Mahanadi |
Orissa |
| Tungabhadra project |
Tungbhadra-Krishna |
AP-Karnataka |
| Nagarjuna Sagar Project |
Krishna |
AP |
| Chambal Project |
Chambal |
Rajasthan and Madhya Pradesh |
| Damodar valley project |
Damodar |
Jharkhand, West Bengal |
