New Delhi, Dec. 20 -- The Public Works Department (PWD) has started constructing a drain and sump near the Zakhira flyover in west Delhi to resolve the persistent problem of waterlogging, given that the underpass in the vicinity has been shut multiple times during monsoon due to flooding. Officials said that the site has been identified as a waterlogging hot spot and Rs.4 crore has been allocated for permanent fixes. "The topography under the flyover is such that rainwater naturally accumulates at the lowest point near the foot of the structure. At present, the water has to be pumped out using temporary arrangements," an official aware of the matter said. During monsoon earlier this year, the Zakhira underpass was among the worst-hit locations in Delhi, as it had to be shut after intense spells of rainfall. Given that it is a key link between central and west Delhi, officials said they decided to design a new drain and pump system, keeping the topographical challenges in mind. Under the revamp, a permanent pump has been constructed at the site and work is underway to connect the sump to an existing drain. Once completed, the system is expected to allow quicker evacuation of stormwater without relying on temporary pumping during heavy rainfall, officials said....