MAKASSAR, Indonesia - The death toll from flash floods and landslides in Indonesia has risen to 30, as rescuers raced to find two dozen still missing, the disaster agency said Thursday.

Thousands have been evacuated from their homes as heavy rain and strong winds pounded the southern part of Sulawesi island, swelling rivers that burst their banks and inundating dozens of communities in nine southern districts.

Parts of the provincial capital Makassar have also been affected.

Rescuers and residents waded through streets filled with waist-deep water, some carrying their belongings above their heads.

"We urge people to always be aware of the possibility of floods and landslides," said national disaster agency spokesman Sutopo Purwo Nugroho.

Landslides and flooding are common in Indonesia, especially during the monsoon season between October and April, when rain lashes the vast Southeast Asian archipelago.

In October, flash floods and landslides killed at least 22 people in several districts across Sumatra island.

On Thursday, the disaster agency said that while flooding in South Sulawesi province was receding "the search and evacuation process is still ongoing".

The death toll had stood at 26 on Thursday morning.

More than 3,000 people have been evacuated and at least 46 are being treated at local hospitals and health clinics.

The floods also damaged houses, government buildings, schools and bridges.