Idukki dam: Why is Kerala planning to open this high-capacity dam after 26 years?

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Updated: July 30, 2018 1:33:31 PM

One of the highest reservoirs in the continent, Kerala's high range Idukki dam is likely to be opened for the first time in 26 years, as copious inflows following heavy monsoon rains resulted in a rise in water levels in the Periyar river.

Idukki dam, idukki dam capacity, Idukki dam news, idukki, idukki dam history Kerala, idukki dam, idukki dam kerala, kerala idukki dam water levelThe shutters of the dam were likely to be thrown open if the water level touched 2,400 feet.

One of the highest reservoirs in the continent, Kerala’s high range Idukki dam is likely to be opened for the first time in 26 years, as copious inflows following heavy monsoon rains resulted in a rise in water levels in the Periyar river. On Friday, the water level in the dam stood at 2,392 feet against its maximum of 2,403 feet, news agency Press Trust of India reported. The shutters of the dam were likely to be thrown open if the water level touched 2,400 feet, officials of Kerala told the news agency.

The dam’s shutters, a double curvature arch reservoir constructed across the Periyar river, were last opened in 1992. However, this will be the first time that the dam is likely to attain its full level during the South West Monsoon period. The arch reservoir comprises three dams — Idukki, Cheruthoni and Kulamavu — built for the Idukki Hydroelectric Project.

While Idukki dam, the highest, is used to store water, the other two are for the purpose to route it to the powerhouse.

The decision was taken in a high-level meeting headed by chief minister Pinarayi Vijayan, called to discuss the precautions to be taken once the shutters are opened. Those in the meeting also included Revenue Minister E Chandrasekharan, Water Resources minister, Mathew T Thomas, and Revenue Additional Chief Secretary, P H Kurian.

The opening of the dam would mean the evacuation of a large number of residents of nearby areas. The meeting also discussed measures on the part of disaster management authorities in such a scenario. The disaster management official will take a survey of buildings in and around 100 metres of the dam area with the help of satellite pictures and details of people residing in these buildings would be collected.

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