As Delhi finalizes its ambitious drainage masterplan, experts and urban planners have proposed a series of targeted suggestions to ensure the capital’s new system is future-ready and climate-resilient. With the existing network designed in 1976 and capable of handling only 50 mm of rainfall per day, the city has repeatedly found itself grappling with severe waterlogging and urban flooding during monsoons.
One of the key recommendations is to design the new system based on modern rainfall projections, taking into account the growing frequency of extreme weather events. Planners suggest incorporating climate-responsive infrastructure capable of managing 100 mm or more rainfall in a single day.
Experts have also called for the integration of real-time monitoring systems using IoT sensors to track drain water levels and blockages. This would enable early warning alerts and quicker municipal response during peak rain spells.
Drain maintenance remains a major concern. Urban development researchers advocate for a year-round desilting protocol backed by independent audits to ensure that drains are cleaned effectively, especially ahead of the monsoon season.
Another suggestion gaining traction is the decentralization of stormwater management. This includes building percolation pits and community soak wells at local levels to reduce pressure on the primary drainage lines.
With much of Delhi’s urban sprawl sitting on what were once natural drainage channels, experts are urging authorities to map and revive these traditional systems. They also stress the importance of integrating the new drainage design with ongoing civic projects like road expansion and metro construction.
To support long-term success, the formation of an inter-agency task force comprising the PWD, DJB, MCD, and DDA has been proposed to streamline coordination and eliminate bureaucratic delays in maintenance and planning.
Additionally, public participation is being seen as vital. Resident Welfare Associations (RWAs) and local communities must be engaged to report clogged drains and prevent the dumping of waste into open channels.
With the draft masterplan expected within the next two weeks, these expert inputs are likely to shape a more efficient and sustainable drainage system for Delhi—one that can stand up to the realities of a warming world and rapidly growing urban population.