"The number of flooded houses along the Code riverbank is based on the result of a survey made shortly after the flood receded," Chief of the Secretariat of the Yogyakarta City Natural Disaster Mitigation Office (BKPBD) Sudarsono said on Sunday.
The flood affected a total of 4,369 people who lived in 14 villages in eight subdistricts, he said.
Many residents evacuated to safer areas when the river began to overflow. However, some of them had returned home by Sunday morning to rid their houses of mud left by the flood, he said.
In the worst-hit areas the flood water level reached up to 150 cm, he said.
To meet evacuees` needs the local authorities had prepared logistics including rice and instant noodle enough for three days, he said.
"We are also preparing a public health service unit to help evacuees who have health problems," he said.
The flood caused sand sediment at the river to increase by 5-10 cm.
Sudarsono said all residents living along riverbanks in the city should be on the alert when heavy rains fell on their areas.
"The public should keep abreast of developments to avoid unexpected things," he said.(*)