At least 28 people died when an overcrowded boat carrying flood evacuees and aid workers capsized in northern India, officials have said.
Millions across South Asia have no food or clean water due to flooding
At least 85 panicked villagers in Uttar Pradesh state boarded the boat, which only had a capacity of 30.
Monsoon rains and floods have hit 10 million people in the Indian states of Bihar, West Bengal and Assam.
In Nepal, floods have killed more than 82 people in the past two weeks, while at least 38 have died in Bangladesh.
The overcrowded boat capsized on the rain-swollen Rohni river near Maharajganj village, 300km (185 miles) south-east of the Uttar Pradesh capital, Lucknow.
Most of the passengers were women and children, officials said. Police are searching for survivors.
"The boat apparently was very old and gave way under the pressure of so many people on board, and the strong river current," senior police officer Prashant Kumar told the Reuters news agency.
The crisis came as research from the charity Save the Children found that nearly 138 million people worldwide had been affected by floods in recent weeks.
More than 1,000 people around the world have died and at least half a million homes have been damaged or destroyed because of the torrential rains, said Save the Children.
The charity's director of emergencies, Gareth Owen, said: "This is an emergency on a worldwide scale and it deserves a global reaction, which is badly lacking at the moment from governments and donors."
More than 17 million have been affected in India, Pakistan, Bangladesh and Nepal.
But the worst affected country is China, where 119 million people have been hit by floods in the last month.