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UN Report on Ageing Dams
February 3 , 2021
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- This report was titled ‘Ageing water infrastructure: An emerging global risk’.
- As per this report, by 2050 most of the people on the Earth will live downstream of tens of thousands of dams built in the 20th century.
- There are 58,700 large dams across the world.
- Most of them were built between 1930 and 1970 with a design life of 50 to 100 years.
- This analysis also included dam ageing case studies from India, France, the U.S., Canada, Japan, Zimbabwe, and Zambia.
- 55% of the world’s total large dams or around 32,716 large dams are found in just four Asian countries: India, China, South Korea, and Japan.
- The problem of dam ageing is confronted by 25 nations.
- 93% of large dams are located in these countries only.
Dam Ageing in India
- More than 1,115 large dams in India will reach near the age of 50-years in the year 2025.
- Over 4,250 large dams in the country will be above 50-years in the year 2050.
- 64 large dams will be more than 150-years-old in the year 2050.
- If the Mullai periyar dam in Kerala fails, around 3.5 million people will be at risk.
- It was built over 100 years ago.
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