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Cyclone warning prompts Bali to step up flood mitigation efforts

Five of Bali’s nine cities and regencies have been hit by flooding since Dec. 11, the provincial Disaster Mitigation Agency (BPBD) said, after days of persistent heavy rain triggered by cyclone seed 93S.

News Desk (The Jakarta Post)
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Fri, December 19, 2025 Published on Dec. 18, 2025 Published on 2025-12-18T18:23:31+07:00

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A woman stands by the collapsed wall of her house on Dec. 16, 2025, after flooding in Batuan village, Gianyar, Bali. Flooding triggered by heavy rain in the tourist area on Monday also damaged a motorcycle and a car and injured one person. A woman stands by the collapsed wall of her house on Dec. 16, 2025, after flooding in Batuan village, Gianyar, Bali. Flooding triggered by heavy rain in the tourist area on Monday also damaged a motorcycle and a car and injured one person. (Antara/Nyoman Hendra Wibowo)

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uthorities in Bali are stepping up flood mitigation efforts after the Meteorology, Climatology and Geophysics Agency (BMKG) warned of the formation of three tropical cyclones near Indonesia that could trigger extreme weather.

Secretary of the Denpasar Disaster Mitigation Agency (BPBD), Anak Agung Surya Kencana, said authorities have installed early warning systems at eight rivers and dams across the provincial capital.

“The devices monitor water levels. When they rise to a dangerous level, a warning is issued, and if overflow occurs, an alarm will sound,” Agung said on Wednesday, as quoted by Kompas.com.

Staff have also begun cleaning drainage systems and dredging rivers to reduce flood risks during extreme weather events.

Previously, Bali Governor I Wayan Koster said the provincial administration was mapping flood-prone areas and conducting land-use assessments along four major riverbanks across the island, the Ayung, Badung, Mati and Unda rivers, to support reforestation and rehabilitation efforts aimed at improving water flow and reducing flooding.

The provincial administration will also take firm action against buildings that violate spatial planning regulations in these areas.

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Koster added that local communities will be involved in flood mitigation efforts by helping clean rivers, preventing waste from entering waterways and planting trees in water catchment areas.

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