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Flood & Damage Assessment$39
Flood Damage Assessment
Flood Damage Assessment framed as a research-led flood & damage assessment study.
Category
Flood & Damage Assessment
Format
PDF Report
Delivery
Digital download after purchase
Price
$39
Summary
Flood events constitute one of the most destructive natural hazards worldwide, yet rapid and accurate assessment of flood extent and building-level damage remains a significant challenge, particularly in data-sparse regions and across diverse geographic and climatic contexts. This study presents a systematic, reproducible framework for satellite-based flood damage assessment that leverages Sentinel-1 C-band Synthetic Aperture Radar (SAR) change detection and OpenStreetMap (OSM) building footprints to quantify both inundation extent and structural exposure across six major flood events spanning four continents: Emilia Romagna, Italy (May 2023); Derna, Libya (September 2023); Thessaly, Greece (September 2023); Sindh, Pakistan (August–September 2022); Porto Alegre, Brazil (May 2024); and Vermont, USA (July 2023).
What the report covers
Flood events constitute one of the most destructive natural hazards worldwide, yet rapid and accurate assessment of flood extent and building-level damage remains a significant challenge, particularly in data-sparse regions and across diverse geographic and climatic contexts.
This study presents a systematic, reproducible framework for satellite-based flood damage assessment that leverages Sentinel-1 C-band Synthetic Aperture Radar (SAR) change detection and OpenStreetMap (OSM) building footprints to quantify both inundation extent and structural exposure across six major flood events spanning four continents: Emilia Romagna, Italy (May 2023); Derna, Libya (September 2023); Thessaly, Greece (September 2023); Sindh, Pakistan (August–September 2022); Porto Alegre, Brazil (May 2024); and Vermont, USA (July 2023).
The methodology employs calibrated backscatter differencing on Ground Range Detected (GRD) imagery, Lee speckle filtering with a 7 × 7 kernel, Otsu automatic thresholding on ∆σdB maps, and permanent water masking derived from Sentinel Normalized Difference Water Index (NDWI) and Modified NDWI composites.
Why it matters
Rapid geospatial flood assessment helps organizations understand disruption, triage response, and scope follow-on recovery or underwriting work.
Intended sectors and users
InsuranceDisaster resilienceGovernmentInfrastructure
Methodology framing
The report is framed around Sentinel-1, SAR, change detection, using the methods described in the source abstract and paper title.
Preview figures
Applications and use cases
Post-event damage screening
Resilience planning
Hazard intelligence
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