Longest Dams In India – Ornaments of Mother India

Longest Dams in India

India has built many dams and water reservoirs after independence and stood as the world’s most bountiful dam-builders. More than 4300 dams were constructed in different parts in India and some are in progress. Nearly two thousand dams among those built are more than 20 years old attracting many tourists not only in India but also across the world. So, out of many dams, these are the ten longest dams in India that are notable ones. Let us have a glance on them.

Longest Dams in India

  1. Tehri Dam, Uttarakhand
  2. Bhakra Nangal Dam, Himachal Pradesh
  3. Indira Sagar Dam, Madhya Pradesh
  4. Nagarjuna Sagar Dam, Telangana
  5. Hirakud Dam, Odisha
  6. Sardar Sarovar Dam, Gujarat
  7. Mettur Dam, Tamil Nadu
  8. Krishnarajasagar Dam, Karnataka
  9. Srisailam Dam, Andhra Pradesh
  10. Idukki Dam, Kerala

Longest Reservoirs in India

1. Tehri Dam, Uttarakhand.

The Tehri  dam found on the river Bhagirathi, located in the state of Uttarakhand is an earth-filled embankment and multi-purpose rock dam. Tehri dam project started in the year 1978 after conducting relevant studies, but got stopped due to some political, financial, social and environmental aspects. Somehow the project geared up with the financial and technical aid of USSR. Tehri dam was categorized into three phases, first phase got completed in the year 2006, second phase(Koteshwar dam) in the year 2012 and the third phase is still under construction.

Longest Dams in India

Specifications of the Tehri Dam

  • Length of the dam is 1886 feet (575 metres)
  • Height of the dam is 850 feet (260 metres)
  • Type of the dam is Concrete Gravity type.
  • Water Reservoir capacity of the dam is 21 lakh acre feet.
  • The installed capacity of the power generation plant near the dam is 1,000 Megawatt power and fulfilling irrigation needs and municipal water supply requirements.

2. Bhakra Nangal Dam, Himachal Pradesh

The Bhakra Nangal dam is a multi-purpose project and is the highest gravity dam in the world. The dam was constructed across the river Sutlej, located in Bilaspur, Himachal Pradesh state. Construction of the dam was started in the year 1948 and opened the gates of the dam for the first time in the year 1963. The main purpose of constructing this dam was to counter the floods in the Sutlej river valley, to provide power via hydro-electricity and facilitate irrigation for two states, Himachal Pradesh and Haryana. Because of the massive size of the dam it has became a tourist spot.

Longest Dams in India

Specifications of the Bhakra Nangal Dam

  • Length of the dam is 1700 feet (520 metres)
  • Height of the dam is 741 feet (226 metres) – Asia’s 2nd highest dam.
  • Type of the dam is Earth and Rockfill type.
  • Water Reservoir capacity of the dam is 10 million acres of fields to states like Haryana, Punjab and Rajasthan.
  • The installed capacity of the power generation plant near the dam is 1,325 Megawatt power to the adjoining states also such as Haryana, Rajasthan, Punjab, Delhi and Chandigarh.

3. Indira Sagar Dam, Madhya Pradesh

This is a multi-purpose dam constructed across the 5th largest river in India, Narmada located in Mundi in Khandwa district of the Madhya Pradesh state. Though the foundation stone was laid in the year 1984 by the former Prime Minister of India, Late Smt Indira Gandhi, actual construction of the dam began in the year 1992 and was opened in the year 2005. The dam is the output of the joint venture made between the National Hydroelectric Power Corporation and Madhya Pradesh Irrigation.

Longest Dams in India - Indira Sagar Dam

Specifications of the Indira Sagar Dam

  • Length of the dam is 2142 feet (653 metres)
  • Height of the dam is 302 feet (92 metres)
  • Type of the dam is Concrete Gravity type.
  • Water Reservoir capacity of the dam is 9.8 million acres feet.
  • The installed capacity of the power generation plant near the dam is 1,000 Megawatt power and provides irrigation to around 1230 sq kms of agricultural lands of two districts – Khargone and Khandwa.

4. Nagarjuna Sagar Dam, Telangana

The world’s largest masonry dam was constructed across the river Krishna and exists as a boundary between two districts, Guntur of Andhra Pradesh state and Nalgonda of Telangana state. The dam was built in the year 1955 and opened in 1967. After many hurdles before the start of the construction of the dam, it got completed with the extensive efforts and personal interest put forth by Raja Vasireddy Rama Gopala Krishna Maheswar Prasad. Nagarjunasagar dam represented as the modern India’s technological and architectural triumphs over nature.

Longest Dams in India - Nagarjuna Sagar Dam

Specifications of the Nagarjuna Sagar Dam

  • Length of the dam is 5,085 feet (1,550 metres) with 26 gates.
  • Height of the dam is 407 feet (124 metres)
  • Type of the dam is Masonry type.
  • Water Reservoir capacity of the dam is 9 million acres feet.
  • The installed capacity of the power generation plant near the dam is 816 Megawatt power and provides irrigation to around 4520 sq kms of agricultural lands of two districts – Prakasam and Guntur.

5. Hirakud Dam, Odisha

After independence, Hirakud dam was the one of the first prime river valley projects in India which was constructed across the river Mahanadi in Sambalpur of Odisha state. The Hirakud dam project was triggered by the Central waterways, Navigation commission and Irrigation after the proposal made by Sir Mokshagundam Vishweshwaraiah to safeguard from the floods impacts on Mahanadi basin.

Longest Dams in India - Hirakud Dam

Specifications of the Hirakud Dam

  • Length of the dam is 25800 metres i.e., the entire dam section.
  • Height of the dam is 200 feet (60.96metres)
  • Type of the dam is Composite and Reservoir type.
  • Water Reservoir capacity of the dam is 4.7 million acres feet.
  • The installed capacity of the power generation plant near the dam is 347.5 Megawatt power and provides irrigation to around 75,000 sq kms of agricultural lands of Mahandi and surrounding areas.

6. Sardar Sarovar Dam, Gujarat

Out of 30 dams planned on the river Narmada in Navagam of Gujarat state, Sardar Sarovar Dam is the largest project to be built. The construction of the dam started in the year 1987 and is still progressing. The main purpose of constructing this project is to develop the irrigation schemes and produce hydro-electricity.

Indian Dams - Sardar Sarovar Dam

Specifications of the Sardar Sarovar Dam

  • Length of the dam is 3970 feet (1210 metres)
  • Height of the dam is 535 feet (163 meters)
  • Type of the dam is Concrete Gravity type.
  • Water Reservoir capacity of the dam is 7.7 million acres feet.
  • The installed capacity of the power generation plant near the dam is 1450 Megawatt power and provides irrigation to around 17,920 sq kms of agricultural lands across 12 districts.

7. Mettur Dam, Tamil Nadu

The Mettur dam is India’s one of the largest dams built in 1934 across the river Kaveri in Salem district of Tamil Nadu state. The dam is constructed to provide irrigation developments and hydro electricity facilities to parts of Salem, Karur, Namakkal, the length of Erode, Thanjavur and Tiruchirapalli. The Mettur dam, the hydroelectric power stations, the park and the hills make the Mettur a tourist location.

Indian Longest Dams - Mettur Dam

Specifications of the Mettur Dam

  • Length of the dam is 5600 feet (1700 metres)
  • Height of the dam is 120 feet (37 meters)
  • Type of the dam is Concrete type.
  • Water Reservoir capacity of the dam is 93.4 bn cubic feet.
  • The installed capacity of the power generation plant near the dam is 32 Megawatt power and provides irrigation to around 2,71,000 acres of agricultural lands across 12 districts.

8. Krishnarajasagar Dam, Karnataka

The Krishnarajasagar dam was constructed across the river Kaveri in Mandya of Karnataka state in the year 1924. The person who initiated the proposal of this project was again Sir Mokshagundam Vishveshvarayya. He observed that people in the region of Mandya and Mysore witnessed mass shifting from their home land to the adjoining areas during hot summer as the crops failed due to improper irrigation and water facility. For this reason, he made a move and after facing many troubles the project got started in the year 1911 and finished in the year 1931. During the construction of this dam around 10,000 workers lost their homes but they got sheltered providing necessary facilities. Now, the water supply from this dam is utilized by the people of Mandya, Mysore and even the Bengaluru city.

Scenic Dams in India - Krishna Sagar Dam

Specifications of the Krishnarajasagar Dam

  • Length of the dam is 8600 feet (2620 metres)
  • Height of the dam is 131 feet (39.8 meters)
  • Type of the dam is Concrete type.
  • Water Reservoir capacity of the dam is 1.1million acre feet.
  • The installed capacity of the power generation plant near the dam is 200 Megawatt power.

9. Srisailam Dam, Andhra Pradesh

This dam is built across the river Krishna in the Kurnool district of Andhra Pradesh state and is the 2nd largest hydroelectric project in India. The Srisailam dam was built in the deep valley of Nallamala hills. The dam construction started in the year 1960 and after many delays got completed in 1980. The purpose for construction of this dam was to provide water supply, power supply and irrigation facilities.

Largest Dams in India - Srisailam Dam

Specifications of the Srisailam Dam

  • Length of the dam is 1680 feet (512 metres)
  • Height of the dam is 476 feet (145 meters)
  • Type of the dam is Concrete and Gravity type.
  • Water Reservoir capacity of the dam is 216 Tmcft.
  • The installed capacity of the power generation plant near the dam is 1670 Megawatt power.

10. Idukki Dam, Kerala

The Idukki dam was constructed across the river Periyar in a narrow valley between granite hills, Kuravathi and Kuravan in the state of Kerala. The construction of the dam began in the year 1969 and got completed in 1973. Idukki dam is one of the highest arch dams in the Asia. The dam water is utilized for the purpose of irrigation facilities and for power generation. The dam also attracts tourists for its attractive waterfalls.

Beautiful Dams in India - Idukki Arch Dam

Specifications of the Idukki Dam

  • Length of the dam is 1200 feet (365 metres)
  • Height of the dam is 554 feet (168 meters)
  • Type of the dam is Concrete, thin arch and double curvature parabolic type.
  • Water Reservoir capacity of the dam is 216 Tmcft.
  • The installed capacity of the power generation plant near the dam is 780 Megawatt power.

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