Pakistan's major cities experience the same cycle of disruption every monsoon. A few hours of heavy rainfall are enough to inundate roads, submerge underpasses, paralyze traffic, disrupt businesses and overwhelm urban infrastructure. The immediate response usually focuses on pumping water out of the city as quickly as possible. While this remains necessary, it addresses only the symptom rather than the underlying problem.

Urban flooding is no longer simply a drainage issue; it is a consequence of decades of unplanned urbanization. As cities continue to expand, natural soil has been replaced by concrete roads, parking areas, commercial buildings and housing developments. Rainwater that once seeped into the ground now rushes into storm drains within minutes, placing enormous pressure on drainage networks that have limited capacity.

The challenge becomes even greater when disposal stations experience power interruptions during heavy storms. Even a short outage can significantly slow water evacuation, causing underpasses and low-lying areas to fill rapidly. Climate change, characterized by increasingly intense rainfall events, is making these situations more frequent and more severe.

The economic consequences are equally alarming. Floodwater entering commercial areas damages inventories, machinery and infrastructure, forcing businesses to suspend operations and causing substantial financial losses. At the same time, public agencies spend enormous........

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