Floods and landslides triggered by heavy rains in Aceh, Indonesia, on December 10, 2025. (Photo: THX/VNA)
To proactively respond during the rainy season and minimize losses for residents, on January 11, Bali’s Regional Disaster Management Agency began installing an early flood warning system in six areas identified as having the highest flood risk in Denpasar City.
According to the Vietnam News Agency correspondent in Indonesia, Bali provincial authorities drew lessons from severe flooding last September, which caused widespread inundation and significantly disrupted urban residents’ daily lives.
Speaking to the media, I Gede Agung Teja Bhusana Yadnya, Head of Bali’s Regional Disaster Management Agency, said the agency is working closely with the state electricity company and the Disaster Risk Reduction Forum to ensure the system is implemented on schedule.
He emphasized that the early installation of water-level monitoring devices is essential, particularly as the rainy season is expected to peak at the beginning of the year, posing heightened flood risks.
Notably, instead of purchasing equipment from external suppliers, Bali’s disaster management agency has independently researched and developed the warning system to optimize costs and improve operational efficiency. The project was launched in November 2025, covering design, assembly, and initial testing phases.
In terms of operation, water-level sensors will be installed beneath riverbeds, while sirens will be mounted above the water surface, similar to tsunami warning models. The sirens will issue alerts at three levels: Level 1 when water rises by 30 centimeters, Level 2 at 86 centimeters, and Level 3 at 150 centimeters — the threshold requiring emergency evacuation.
The installation is expected to be completed by January 12. Immediately afterward, local authorities will conduct public outreach, providing guidance to residents and businesses within a 200–300 meter radius of the siren locations on how to recognize warning signals and respond effectively in the event of flooding.