The death toll from heavy rains that lashed western Japan crossed 200 on Thursday as rescue workers searched the ruins of homes for dozens of people still missing.
Operations were under way to dig out and clear up after the devastating floods and landslides that engulfed entire neighbourhoods.
But with about 60 people still feared missing, local authorities said they would continue searching house by house looking for survivors, or victims.
"The critical 72 hours have passed," said Mutsunari Imawaka, an official with Okayama prefecture, one of the worst-hit regions.
"But we will continue our search believing there are still survivors," he said.
He said at least 18 people were missing in Okayama alone, and that several thousand people were checking houses across the region.
Television footage showed dozens of rescuers, including troops, removing massive rocks with mechanical diggers from houses buried in landslides.
Rescuers were also manually shovelling dirt to search for missing people.
The rains are the deadliest weather-related disaster in over three decades in Japan, and the size of the death toll has raised questions about whether authorities were sufficiently prepared.
Government spokesman Yoshihide Suga said the death toll from the disaster reached 201.
"Since a lot of people are still unaccounted for, we are carrying out rescue operations under a policy that saving lives is the top priority," Mr Suga said.
"Being determined to do whatever we can do as a government, we want to continue tackling restoration and reconstruction in the disaster zone."
On Wednesday he said there would be a review of disaster management policies.
"In recent years we have seen damage from heavy rains that is much worse than in previous years," he said.
"We have to review what the government can do to reduce the risks."
Prime Minister Shinzo Abe, who cancelled a foreign trip as the death toll rose this week, brushed aside criticism of the response during a trip to Okayama on Wednesday.
"We have done our best since the disaster happened," local media quoted him as saying.
On Thursday, he pledged to ramp up help for affected areas and said the government had secured about 71,000 temporary homes for evacuees.
"Looking ahead, as we are expecting a massive amount of disaster-generated waste, I plan to send a team to each prefecture to support" clean-up efforts, Mr Abe said at a morning meeting broadcast on local television.
The government has said it will set aside around $20 million (Dh73.5m) for the relief effort and Mr Abe said there would be financial support for local governments to help with the reconstruction effort.
Mr Abe, who is expected to visit another disaster-affected area on Friday, said the government would "do everything we can so that people will not have to continue living in uncomfortable situations in shelters".
About 10,000 people whose homes were buried by landslides or submerged in flood waters are still in shelters.
Even some of those whose homes were not destroyed were struggling with water and electricity shortages.
Military vehicles were being used to bring drinking water to areas without supplies, and a steady stream of volunteers were signing up to help the clean-up operation or offer donations.
The scale of the disaster means the process of returning to normal life will be slow, officials said.
"We don't know how long it will take for the recovery," said Mr Imawaka, the official in Okayama.
"The roads and water systems are damaged, so it's hard to predict at this moment."
And authorities warned of the continued risk of landslides, with rain forecast in some areas on Thursday, as well as heatstroke in other places where temperatures approached 35 degrees Celsius.
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Japan rescuers go house to house as flood toll hits 156
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A man searches for his missing son next to a house submerged in mud after discovering his car nearby in Yanohigashi, Japan, on July 10, 2018. Getty Images -
Rescuers search for missing people at a mudslide site in Kumano, Hiroshima. Kyodo News / AP -
People inspect their damaged homes in a flood hit area in Mabi, Okayama. AFP -
A boy moves sandbags to place outside properties as floodwater flows down a road in Yanohigashi. Getty Images -
Emergency service workers arrive to search for people following a landslide in Yanohigashi. Getty Images -
A man with a shovel walks on a damaged road in Mabi, Okayama. AFP -
An evacuee watches his pet dog at an evacuation centre in Soja, Okayama. Kyodo News / AP -
Local residents take rest near electrical fans at Okada elementary school in Kurashiki, Okayama. Reuters -
A car sits in water after the area was devastated by flooding and landslides in Mabi, Okayama. AFP -
A local resident walks in a flooded area in Kurashiki, Okayama. Reuters -
Local residents pause as they try to clean debris from their house in Kurashiki, Okayama. Reuters -
Submerged and destroyed houses in a flooded area in Kurashiki, Okayama. Reuters
