Heavy rains triggered a new round of flooding along the central coast on Sunday. As of Wednesday, the Central Committee for Flood and Storm Control reported 19 dead and six missing in the latest disaster.
Thousands of homes were flooded.
Landslides blocked numerous roads in the region, bringing traffic to a standstill.
Nam Tra My District in Quang Nam Province, for example, has been isolated for five days, because the only entrance was submerged in as much as five meters of water.
As the water levels rose on local rivers, heavy flooding spread to streets throughout the region and saturated streets in Hoi An.
Some 6,500 people were evacuated, and most local schools were closed.
The same situation was reported in Binh Dinh and Phu Yen provinces.
In Quang Ngai Province, a hill in Son Ha District collapsed on Tuesday, burying three houses, killing one child and critically injuring another two. Meanwhile, a crack 150 meters long and 1.2 meters deep was recorded nearby and threatened to widen under heavy rains, local officials said.
Rains continued across the region, but floods were expected to decrease on rivers between Thua Thien Hue and Phu Yen provinces, the committee said in its latest report.
Since the end of September, floods in the region have killed 186 people, injured another 126 and left 26 missing, according to the committee.
Bui Minh Tang, director of the National Center for Hydro-Meteorological Forecasting (NCHMF), told Thanh Nien that four disastrous floods have pummeled the region.
"It was forecast that until the end of this year, it's very likely that central provinces will be hit by another one to two rounds of major flooding," Tang said.