Supa Dam
| Supa Dam ಸುಪಾ ಅಣೆಕಟ್ಟು |
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The Back waters of Supa Dam Asia's second largest dam image_alt =
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 Location of Supa Dam
ಸುಪಾ ಅಣೆಕಟ್ಟು in India Karnataka#India |
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| Country | India |
| Location | Joida |
| Coordinates | 15°16′34″N 74°31′36″E / 15.27611°N 74.52667°ECoordinates: 15°16′34″N 74°31′36″E / 15.27611°N 74.52667°E |
| Status | Operational |
| Construction began | 1974 |
| Opening date | 1987 |
| Dam and spillways | |
| Type of dam | Concrete gravity |
| Impounds | Kalinadi River |
| Height | 101 m (331 ft) |
| Length | 332 m (1,089 ft) |
| Reservoir | |
| Total capacity | 4,178,000,000 m3 (3,387,160 acre·ft) |
| Active capacity | 4,115,000,000 m3 (3,336,085 acre·ft) |
| Catchment area | 1,057 km2 (408 sq mi) |
| Power station | |
| Commission date | 1985 |
| Hydraulic head | 72 m (236 ft) (design) |
| Turbines | 2 x 50 MW Francis-type |
| Installed capacity | 100 MW |
Supa Dam is built across Kalinadi (Kannada) or Kali river in state of Karnataka in India. The dam is situated in Joida taluk of Uttara Kannada district. The power house at the foot of the dam has two electricity generators of fifty megawatt each. The electricity generated is supplied to different parts of Karnataka. The dam was built by Hindustan Steel Works Construction Limited (HSCL) and is now operated by Karnataka Power Corporation Limited. The power house was commissioned in 1985.
The construction started in 1974 and ended in 1987. It has a gross storage capacity of 4178 Mcum and a live storage of 4115.25 Mcum of water. It is designed having two generators of 55 MVA and has a generator voltage of 11KV. The entire generator output accounts for 100 MW of electricity with 2916 Terminal Amp/unit and a line voltage of 110 KV. They generate about 542 Million Units annually. The output four lines of the grid are distributed between the substations at Ponda and Ambewadi equally. It is a concrete gravity dam with a height of 101 m and length of 332 m with 3 radial gates of 15m x 10m dimension and has vertical Francis turbines with a design head of 72 m.
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