Heavy rainfall caused severe waterlogging and choked traffic on the ITO carriageway in Delhi-NCR on Friday evening, Sept. 13, 2024 [1, 2].

The flooding disrupted the evening commute for thousands of office-goers and residents, highlighting the vulnerability of the city's drainage infrastructure during extreme weather events.

The India Meteorological Department had issued a red alert prior to the storm [1, 2]. Torrential rain continued for over 12 hours [2], leading to widespread paralysis across major arterial roads. The ITO carriageway, a critical transit point for the city, became nearly impassable as vehicles struggled to navigate the rising waters.

Commuters reported extreme delays as the city's drainage systems failed to keep pace with the volume of precipitation. In some areas, the depth of water on the roads reached up to four feet [2], a level that stalled smaller vehicles and forced many drivers to abandon their cars.

Emergency services and traffic police worked to manage the gridlock, but the scale of the waterlogging made rapid clearance difficult. The rain affected multiple sectors of the National Capital Region, turning standard commutes into hours-long ordeals for those attempting to return home from work.

Local authorities have faced recurring criticism for the city's inability to handle monsoon surges. Despite the red alert, the severity of the flooding on the ITO carriageway suggests that existing mitigation efforts remain insufficient for high-intensity rainfall events.

Heavy rainfall caused severe waterlogging and choked traffic on the ITO carriageway

The recurring failure of Delhi's drainage system during red-alert weather events indicates a systemic gap between meteorological warnings and urban infrastructure capacity. When critical arteries like the ITO carriageway flood to a depth of four feet, it creates a cascading failure in city logistics, suggesting that current urban planning is unable to accommodate the increasing intensity of monsoon rainfall.