A few hours of early morning rainfall on Sunday were enough to expose Ludhiana’s poor drainage system as several low-lying areas were submerged, causing inconvenience to commuters and residents. Waterlogging was reported from Sherpur Chowk, Dhandari, Bhamian Khurd, Tajpur Road, Dholewal Chowk and a number of other vulnerable pockets, disrupting traffic and slowing vehicular movement.