What does this research mean for the field?

During the September 2025 flood in Denpasar, Indonesia, structural building damage occurred across a wider range of flood depths (0–3.5 m) compared to non-structural damage (0.4–2 m), predominantly affecting low-rise, unreinforced masonry structures. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To document and analyze the extent of structural and non-structural building damage alongside flood depth variability following a major flood event.

August 24, 2026Progress in Disaster ScienceOpen Access

Field survey of post-flood damage in Denpasar, Indonesia following the September 2025 flood

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Authors

SSSarah Eden SuryantoBank Indonesia YRYanuar Rizky RamadhanBank Indonesia IIIswandi ImranBandung Institute of Technology

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Implication

Field survey reveals widespread structural failure across flood depths up to 3.5 meters in low-rise masonry buildings, highlighting critical empirical data for flood mitigation.

Key Points

To document and analyze the extent of structural and non-structural building damage alongside flood depth variability following a major flood event.
Conducted a post-disaster field survey from 15 to 17 September 2025 across Denpasar, Badung, Tabanan, and Gianyar in Indonesia.
Assessed 50 initial observation points and selected 38 spatially independent points using a minimum spacing threshold of 90 m.
Surveyed areas consisted predominantly of single-storey (72%) residential buildings (46%), built primarily with unreinforced masonry (44%), confined masonry (26%), and reinforced concrete (18%).
Flood depths ranged from 0 to 4 m, resulting in non-structural damage in 54% of cases (depths of 0.4–2 m) and structural damage in 46% of cases (depths of 0–3.5 m).
Damage modes ranged from wall finish and contents loss to severe foundation settlement, wall collapse, total building destruction, and structural failures of roads and bridges.

Cite This Study

Suryanto et al. (2026) studied this question.

synapsesocial.com/papers/6a8c0010bca056c88e6def1b https://doi.org/10.1016/j.pdisas.2026.100690

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Implication

Field survey reveals widespread structural failure across flood depths up to 3.5 meters in low-rise masonry buildings, highlighting critical empirical data for flood mitigation.

Field survey of post-flood damage in Denpasar, Indonesia following the September 2025 flood

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Key Points

Cite This Study

Field survey of post-flood damage in Denpasar, Indonesia following the September 2025 flood

Discussion

Member takes

Implication

Key Points

Cite This Study

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