Officials in India's Maharashtra state say about 200 bodies have been found following devastating monsoon rains.
Commuters struggle to work on Wednesday
Deputy chief minister RR Patil told the BBC that 83 of those killed were in the state capital, Mumbai (Bombay).
Officials say rain on Tuesday was the heaviest recorded in a single day in India. A third of Mumbai is deluged.
Schools are closed and trading on the Bombay Stock Exchange has been light. The armed forces have been called in to take part in rescue efforts.
Mr Patil says many more deaths were feared in the floods. Rescue teams are distributing food and drinking water, he said.
Many flood victims drowned or were killed in mudslides caused by the heavy rain which began on Sunday.
Outside Mumbai, two of the worst-hit areas are Raigad and Ratnagiri districts.
"We have not been able to reach some villages where more than several dozen people may be missing in landslides," Krishna Vatsa, the official in charge of the relief efforts, told Reuters news agency.
Officials say that more than 26 inches of rain fell in Mumbai on Tuesday.
One weather official said conditions were particularly bad because the rain had coincided with high tides.
All domestic and international flights to and from Mumbai have been cancelled for a second day. Runways are under water and air traffic controllers and scores of other airport staff have not reported for work.
The navy has been called in to help some 150,000 people stranded in offices, roads, airports and railway stations in Mumbai since Tuesday afternoon.
The BBC's Zubair Ahmed in Mumbai says that most of the city's main roads are littered with vehicles in which the passengers spent the night.
Inter-city and commuter trains have been cancelled. The relief work in Maharashtra has been hampered by continuous rain.
"We have declared a public holiday and asked people to stay indoors," Chief Minister Deshmukh said. Schools are shut for two days.
Financial losses to Maharashtra are estimated to be over $110m. Mobile phone networks have suffered disruption.
Many workers stayed in their offices overnight as the waters made the journey home impossible.
The rain is predicted to continue for some time.
Monsoon floods at the end of June and early July left more than 50 people dead in neighbouring Gujarat state.