The report, titled 'Ageing water infrastructure: An emerging global risk' and compiled by United Nations University's Canadian-based Institute for Water, Environment and Health, says most of the 58,700 large dams worldwide were constructed between 1930 and 1970 with a design life of 50 to 100 years.source https://timesofindia.indiatimes.com/india/ageing-dams-in-india-us-other-nations-pose-growing-threat-un-report/articleshow/80433078.cms
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