Economy Why the city that never stops comes to a standstill when it rains Updated : July 09, 2019 05:38 PM IST On July 2, Mumbai witnessed the second heaviest rainfall in a day, in the last 45 years. An outdated and choked stormwater drainage system does not have the capacity to deal with intense rains. Razing of mangroves and tree cover for development, pollution and interference with rivers and unsustainable construction have reduced the city’s natural defences against floods. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.