Nagarjunasagar Dam
| Nagarjuna Sagar Dam | |
|---|---|
నాగార్జునసాగర్ ఆనకట్ట
Nagarjuna Sagar Dam |
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 Location of Nagarjuna Sagar Dam in India
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| Official name |
నాగార్జునసాగర్ ఆనకట్ట Nagarjuna Sagar Dam |
| Location | Nalgonda District, Telangana and Guntur District, Andhra Pradesh |
| Coordinates | 16°34′32″N 79°18′42″E / 16.57556°N 79.31167°ECoordinates: 16°34′32″N 79°18′42″E / 16.57556°N 79.31167°E |
| Construction began | 10 December 1955 |
| Opening date | 1967 |
| Construction cost | 132.32crore rupees |
| Dam and spillways | |
| Impounds | Krishna River |
| Height | 124 metres (407 ft) from river level |
| Length | 1,550 metres (5,085 ft) |
| Reservoir | |
| Creates | Nagarjuna Sagar Reservoir |
| Total capacity | 11.56×109 m3 (9×106 acre·ft) (408 Tmcft) |
| Active capacity | 5.44×109 m3 (4,410,280 acre·ft) |
| Catchment area | 215,000 square kilometres (83,000 sq mi) |
| Surface area | 285 km2 (110 sq mi) |
| Power station | |
| Operator(s) | TSGENCO |
| Commission date | 1978-1985 |
| Turbines | 1 x 110 MW Francis turbine, 7 x 100.8 MW reversible Francis turbines |
| Installed capacity | 816 MW (1,094,000 hp) |
Nagarjuna Sagar Dam was built across the Krishna river at Nagarjuna Sagar where the river forms the boundary between Nalgonda District in Telangana and Guntur district in Andhra Pradesh states in India. The construction duration of the dam was between the years of 1955 and 1967. The dam created a water reservoir whose gross storage capacity is 11.472 billion cubic metres (405.1×109 cu ft). The dam is 490 feet (150 m) tall from its deepest foundation and 0.99 miles (1.6 km) long with 26 flood gates which are 42 feet (13 m) wide and 45 feet (14 m) tall. Nagarjuna Sagar was the earliest in the series of large infrastructure projects termed as "modern temples" initiated for achieving the Green Revolution in India. It is also one of the earliest multi-purpose irrigation and hydro-electric projects in India. The dam provides irrigation water to the Prakasam, Guntur, Krishna, Khammam, West Godavari and Nalgonda districts along with hydro electricity generation. Nagarjuna Sagar dam is designed and constructed to utilise up to the last drop of water impounded in its reservoir of 405 TMC gross storage capacity which is the second biggest water reservoir in India.
The perseverance and logistics support of Raja Vasireddy Ramagopala Krishna Maheswar Prasad paved the way for the construction of the Nagarjuna Sagar project. He came to know that the Government of Madras Presidency had made plans to divert water from the Krishna river to Madras by linking the Krishna and Pennar rivers. He embarked upon a tour of nine districts of Andhra Pradesh and visited each and every village to collect the signatures of people in favour of the Nagarjuna Sagar Dam project. He traveled through the thick and inhospitable jungles near Macherla to visit the site of Nandikonda and formed a team of retired engineers at his own expense to make the project plans and designs. The government of Madras tried to scuttle his plans, but the Raja established the 'Krishna Farmers Welfare Society' and exerted pressure on the Government of India in favour of the Nagarjuna Sagar Dam. The Government of India instituted the Khosla Committee but the committee refused to visit the site on the excuse that there was no motorable road to Nandikonda. The Raja gathered villagers and volunteers from twenty five villages and made a road by labouring day and night for a week at his own expense. The Khosla committee visited the site and found it to be the most ideal location to build a gigantic dam across the river.
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