UN disaster experts say it could be days before the full extent of the damage is known because of the government's tight controls on communications.
Al Jazeera's correspondent, who cannot be named for security reasons, said although the clean up operation in the costal city of Yangon - the former capital and biggest city - appeared to be going quite well, the situation was dire in other areas.
Electricity and water lines were down, but the military and police were on the ground clearing trees off the road and getting water supplies to people in Yangon, she said.
But in the Irrawaddy Delta, a huge area just a few hours from Yangon, the situation was dire and appeared to be getting worse by the hour.
|Locals and the military have begun the |
clean-up in Yangon [AFP]
Chris Kaye, the UN's acting humanitarian co-ordinator in Yangon, confirmed that "the Irrawaddy delta was hit extremely hard not only because of the wind and rain but because of the storm surge".
"The villages there have reportedly been completely flattened.''
It is unknown to what extent the destruction caused by the cyclone will affect the holding of a referendum on May 10, on a new charter backed by the ruling generals.
But the government indicated that it would proceed as planned.
"It's only a few days left before the coming referendum and people are eager to cast their vote," the state-owned newspaper Myanma Ahlin said on Monday.
The military says the vote is the first stage in a seven-step "road map to democracy", intended to culminate in multi-party elections in 2010.
The process has been criticised by opposition groups which say the process is intended only to tighten the military's grip on power.