The railway tracks are not even visible and the poor invisibility adds to this and further hampers the working of the railways.
Western coastal areas, including Mumbai in Maharashtra and parts of Gujarat, are expected to experience heavy rainfall in next 24 to 48 hours.
Helpline numbers were also set up by the Mumbai police and the government to look at the safety of the people in the heavy rains. Some places also recorded cases of water logging in places like Worli, Kurla, Andheri and Dadar and other nearby areas.
"Most of the shanties and houses in Dharavi were submerged in water and we lost all our valuables", Selvam Sathya, 45, told AFP. As the city limps back to normalcy, local train services have resumed, although schools and colleges will remain closed on Wednesday.
Predictably, roads have much less traffic, partially due to people staying home and partially due to waterlogging.
Flight operations are normal this morning at Mumbai airport, the airport official said. Besides the metropolis, adjoining Navi Mumbai and Thane regions were also lashed by incessant downpour since last night, delaying suburban train services and leaving vehicles crawling through waterlogged roads in low-lying areas.
Several firms made arrangements to provide food and rest areas for employees stuck in offices, while officials of temples and religious bodies offered help to those stranded on streets. Central Railway services have been suspended.
Five teams of the Indian National Disaster Response Force (NDRF) have been deployed to rescue people.
Numerous more than 5,000 dabbawallahs were left stranded in the city overnight, a spokesman for the Mumbai Dabbawallha Association told the Press Trust of India. Mumbaikars are requested to maintain a safe distance from beaches in the city.
President Ram Nath Kovind also took to social media to express his concern and assured people that best steps are being taken to tackle the situation.
App based cabs like Ola dropped people home free of charge.
Mumbaikars were brought to their knees on Tuesday, as torrential rain pounded the metropolis, inundating almost the entire island and its suburbs, crippling normal life and bringing back unpleasant memories of the July 26, 2005 deluge.