With the 2026 monsoon season approaching, Mumbai has stepped up efforts to tackle one of its most persistent urban challenges—waterlogging. Civic authorities have strengthened drainage infrastructure, expanded pumping capacity and implemented additional flood-control measures across vulnerable locations. However, recurring flooding incidents continue to raise questions about whether the city’s preparations will be enough to withstand intense rainfall.
The Southwest Monsoon entered southern Maharashtra on June 6 and is expected to reach Mumbai between June 10 and June 12. Even before its arrival, heavy pre-monsoon showers on May 31 and June 3 exposed vulnerabilities in the city’s infrastructure, causing water accumulation in several areas and forcing the temporary closure of the Andheri Subway.
Mumbai’s flooding challenges stem from decades-old infrastructure that struggles to cope with present-day weather patterns. Much of the city’s stormwater drainage network was designed in the early 1900s and can handle only around 25 millimetres of rainfall per hour. The limitations of this system were dramatically exposed during the July 26, 2005 floods, when a record 944 millimetres of rain fell within 24 hours, leading to widespread devastation and over 1,000 deaths.
Environmental degradation and rapid urbanisation have further intensified the problem. Extensive land reclamation, shrinking wetlands, loss of mangrove cover and encroachments on natural waterways have weakened the city’s natural flood defences. In addition, several drainage outfalls remain vulnerable to seawater backflow during high tides, reducing their effectiveness during heavy rainfall.
Ahead of this year’s monsoon, the Brihanmumbai Municipal Corporation (BMC) has deployed 43 major and 10 mini pumping stations, along with more than 431 dewatering pumps across low-lying and flood-prone locations. Authorities have also completed desilting works and addressed over 400 identified flooding hotspots.
Despite these measures, recent downpours—including 69 millimetres of rainfall recorded in Versova on June 3—caused traffic disruptions and renewed flooding at the Andheri Subway. As the peak monsoon season approaches, areas such as Andheri, Hindmata and other vulnerable stretches will serve as a key test of whether Mumbai’s latest flood-mitigation efforts can finally deliver lasting relief.
Source: Lokmat Times
