Critically examine how rapid, unplanned urbanization in India has heightened vulnerability to urban flooding. How can river-centric urban planning mitigate this?

Rapid, unplanned urbanisation has turned many Indian cities into flood-prone concrete catchments. By shrinking natural buffers and overloading drainage, it has converted heavy rain into urban disaster rather than a manageable event.

• How urbanisation increases vulnerability: Encroachment on lakes, wetlands, marshes and natural drains reduces storage and slows outflow. Bengaluru has lost nearly 80% of its water bodies, while Chennai’s Pallikaranai marsh has shrunk sharply.
• Concretisation intensifies runoff: Roads, roofs and pavements block infiltration, so water moves faster into drains. Old drainage systems, often designed for much lower rainfall, cannot cope with present-day extremes.
• Floodplain misuse worsens risk: Construction on riverbeds and floodplains narrows carrying capacity and removes the river’s natural spill space. Poor waste disposal further clogs drains and channels.
• Climate stress and weak governance: Short, intense cloudbursts now combine with fragmented urban management, poor maintenance and weak enforcement of land-use rules.

Thus, urban flood management must move from drain-centred engineering to river-centric resilience. Cities should treat rivers as living systems, not as encroached channels, and combine strict zoning, ecosystem restoration and better governance.