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KUALA LUMPUR was once again inundated by flash floods last night as heavy rainfall overwhelmed the city’s drainage systems, leading to water spilling over onto roads and low-lying areas.
The intense downpour, which began Thursday evening, was accompanied by thunderstorms and extraordinary cumulonimbus cloud formations, rapidly triggering water accumulation along critical routes including Jalan Tun Razak towards the World Trade Centre (WTC), Jalan Sultan Azlan Shah, and areas near the Klang River.
Reports indicated that river levels briefly exceeded danger thresholds, prompting overflow into surrounding streets.
Social media posts and field observations highlighted the speed of the flooding, characteristic of flash floods, with water levels rising within 30 minutes of peak rainfall.
Videos shared by residents depicted fast-moving currents along roads, stranded vehicles, and overflowing drains, particularly in areas with blocked or under-capacity drainage systems.
According to records from the Kuala Lumpur City Hall (DBKL), at least 15 locations across the city are recognised as flash flood hotspots.
Despite regular maintenance of drains and water retention facilities in preparation for the Northeast Monsoon, these areas again experienced pressure on the drainage system Thursday night.
Experts attribute the flooding to several factors, including exceptionally heavy rainfall, increased surface runoff from urban development, and limited drainage capacity at certain locations.
The simultaneous downpours in surrounding districts such as Cheras, Gombak, Batu Caves, and Petaling Jaya further intensified the flow of water into the city from upstream areas.
While mitigation projects, including upgrades to retention ponds and pumping systems, have been implemented, the recent floods underscore Kuala Lumpur’s ongoing vulnerability to flash flooding whenever rainfall exceeds drainage capacity.
The Malaysian Meteorological Department (MetMalaysia) has warned that unstable weather conditions are expected to persist overnight, signalling a continued risk of repeated incidents.
Authorities have urged the public to monitor official warnings closely and avoid high-risk routes. The recurring flash floods highlight not only the immediate response challenges posed by sudden heavy rain but also the structural issues facing the city, pointing to the urgent need for long-term urban planning and enhanced rapid-response capabilities. - December 5, 2025