Al Jazeera's Marga Ortegas in Legazpi, the capital of worst-hit Albay province, says the situation there can get worse.
"People are crammed into evacuation centres without medical aid and they are not getting any food. There is a feeling that the government is not doing enough."
|Survivors are picking up the pieces in the|
shadow of Mount Mayon
Officials have decided to carry out mass burials of the dead to stop the spread of disease.
In the town of Guinobatan 57 unidentified people were buried in a mass grave.
The vice-mayor Gene Villareal, said: "We couldn't wait any longer for the bodies to be identified.
"We have no electricity, no freezer, no forensic experts and few chemicals. It was a health issue ... the bodies were starting to decompose."
In the town of Daraga, bordering Mount Mayon, more than 50 bodies were stacked in front of an overflowing funeral parlour.
The undertaker estimated there were around 150 corpses in all.
Cedric Daep, head of the provincial Disaster Control Council, said it would be a case of digging bodies from the mud rather than rescuing survivors.
"There are possibly dozens or hundreds [of bodies] to be recovered," Daep told AFP.
He said floodwaters had risen so rapidly many people simply did not have time to get out of their houses.
Rea Buen tried to retrieve water containers from what used to be her home.
"This used to be such a happy place, but not any more. When the mud came down we got out, but as I turned back I saw relatives and friends being washed away by the mud ... all I could do was watch. We could do nothing,"
Photographs of the missing line the Legazpi town square, as residents, many clutching handkerchiefs over their faces, searched for relatives among the dead.
"My siblings, my mother, they are gone. My niece is dead and at the plaza there are so many dead people," one woman sobbed.
The storm was initially feared to be on course to pass over Manila, the Philippine capital, a city of some 12 million people.
|The villages on the slopes of the Mayon|
volcano were hit by mudslides (file photo)
But it changed course overnight, sparing the city from the worst effects of the storm before it reached into the South China Sea.
In September Typhoon Xangsane left around 200 people dead and missing, with clean-up work still far from finished.
Damage to transport links and crops from Xangsane and other storms this year has already had a noticeable impact on the Philippine economy, slowing third quarter growth figures.