In News
- The Kerala government made a strong pitch in the Supreme Court to decommission the 126-year-old deteriorated Mullaperiyar dam operated by Tamil Nadu and built a new one.
- Saying climate change, erratic and heavy rainfall and floods make the spectre of catastrophe real and near.
Issues with the dam
- The ageing dam is situated in the Seismic Zone III area.
- The dam is a source of friction between Tamil Nadu and Kerala.
- A cascading failure of Mullaperiyar and Idukki will result in a catastrophe that is beyond imagination.
- It will affect the life and property of 50 lakh people residing below the Idukki dam.Â
Supreme Court’s Stand
- The SC ordered the Mullaperiyar Dam Supervisory Committee to issue directions on issues concerning the dam’s safety.
- A permanent Supervisory Committee in 2014 was constituted to oversee all the issues concerning the Mullaperiyar dam.Â
- Kerala has urged the Supervisory Committee to reconsider the peak value of the upper rule level of 142 feet.
- Which is formulated by Tamil Nadu in consultation with the Central Water Commission (CWC).Â
- If the water level at Mullaperiyar was kept at a higher level, releases from itÂ
would be affecting the already filled Idukki reservoir.
Kerala’s StandÂ
- Kerala’s affidavit coincides with a red alert issued in Chennai following torrential rains.Â
- The Chennai rains came on the heels of several days of downpour in Kerala.Â
- The State referred to the Uttarakhand flood, the Chamoli disaster of February 2021.
- Which was mainly attributed to the climate change in the environs of the Nanda Devi National Park, a UNESCO world heritage site.
- Building a new dam in the downstream reaches of the existing Mullaperiyar dam is the only permanent solution.
- The suggestion dates back to 1979, Kerala suggested but Tamil Nadu had not concurred with the proposal of a new dam.
- The State referred to the decommissioning of another 19th-century lime concrete structure, the Victoria dam in Australia.
- Which was decommissioned in 1990 following seepages and a new dam constructed.
Mullaperiyar Dam
Periyar River
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Source: TH