Can Bengaluru take a leaf out of the global cities to mitigate urban flooding?
Bengaluru should take global cities as models to mitigate its chronic problem of urban flooding. In Singapore, every large building has a green roof (vegetation) that can store rainwater that helps in urban cooling, stormwater management and improves air quality. In the Netherlands, the ‘Room-for-the-river concept is adopted, where the river (or rainwater) is allowed to flood agricultural land, playgrounds and parking lots every 10-20 years to save the downstream big cities from devastation. In Ghana, the ‘polluter must pay’ principle is a sustainable funding option where taxes collected on plastics is being used to build recycling plants. Moving beyond engineering solutions to urban floods, a global webinar on “Managing urban floods in today’s climate-risked world”, hosted by Centre for Science and Environment discussed nature-based solutions drawing examples from Global South cities. Flagging the chronic issues plaguing the flood control in cities, experts stated that poor urban planning and governance, outdated drainage systems, fragmented institutional responsibility, data gaps, weak early warning systems, urban planning without factoring in climate change, encroachment of wetlands, weak enforcement of land use and zoning regulations, poor solid waste management, and lack of public awareness
