| Idamalayar Dam | |
|---|---|
 Idamalayar Dam | |
  Location of Idamalayar Dam in India  Idamalayar Dam (Kerala) | |
| Official name | Idamalayar Dam |
| Country | India |
| Location | Ernakulam District, Kerala |
| Coordinates | 10°12′53.0″N 76°52′37.4″E / 10.214722°N 76.877056°E10°12'53.0"N 76°52'37.4"E |
| Construction began | 1970 |
| Opening date | 1985 |
| Construction cost | Rs. 539.50 crores (US$1.199 billion) |
| Owner(s) | Kerala State Electricity Board |
| Dam and spillways | |
| Type of dam | Gravity dam |
| Impounds | Edamalayar/Periyar river |
| Height | 102.80 metres (337.3 ft) |
| Length | 373 metres (1,224 ft) |
| Reservoir | |
| Creates | Idamalayar Reservoir |
| Total capacity | 1.0898 cubic kilometres (0.2615 cu mi) |
| Catchment area | 381 km2 (147 sq mi) |
| Surface area | 28.3 km2 (10.9 sq mi) |
| Operator(s) | Kerala State Electricity Board |
| Turbines | 2 x 37.5 MW |
| Installed capacity | 75 MW |
| Annual generation | 380 GW·h |
Idamalayar Dam is a multipurpose concrete gravity dam located at Ennakkal between Ayyampuzha and Bhoothathankettu in Ernakulam district of Kerala on the Idamalayar, a tributary of the Periyar River in Kerala, South India. The dam however extends east as far as Malakkappara. Completed in 1985, with a length of 373 metres (1,224 ft) and a height of 102.8 metres (337 ft), the dam created a multipurpose reservoir covering 28.3 km2 (10.9 sq mi) in the scenic hills of the Anamalais.[1][2]
The reservoir storage is utilized by a hydroelectric power station which has an installed capacity of 75 MW with two units of 37.5 MW capacity, producing an annual energy output of 380 GW·h.[3][4]
The large reservoir created by the Idamalayar Dam is operated by the Kerala State Electricity Board to augment its peak power generation requirements.[5] The dam will benefit the Idamalayar Irrigation Development Project by diverting water released from the tail race channel of the Idamalayar power station.[6]
- ^ "Fact File on Major Dams owned by Kerala State Electricity Board". Expert Eyes. Org. Retrieved 30 January 2011.
- ^ "Idamalayar". Kerala Planning Board.org. Retrieved 30 January 2011.
- ^ "Generation". Kerala State Electricity Board. Archived from the original on 6 December 2010. Retrieved 30 January 2011.
- ^ Sharad K. Jain; Pushpendra K. Agarwal; Vijay P. Singh (2007). Hydrology and water resources of India. Springer. p. 759. ISBN 978-1-4020-5179-1.
The reservoir has a live storage capacity of 1018 million cubic metres at FRL 169 m
- ^ Central Board of Irrigation and Power (1995). Water and energy, 2001. Central Board of Irrigation & Power. pp. 610, 614. Retrieved 1 February 2011.
- ^ "Irrigation and Flood Control" (PDF). Kerala Planning Board. Retrieved 30 January 2011.