FloodScan: Near Real-Time and Historical Flood Mapping

FloodScan uses satellite data to map and monitor floods daily, helping compare current flood conditions with historical averages. This dataset contains two resources: The first (hdx floodscan zonal stats.xlsx) is a daily tabular dataset providing average FloodScan Standard Flood Extent Depiction (SFED) flood fraction (0-100%) per admin 1 and 2 level. Historical baseline values (SFED BASELINE) are calculated per day-of-year from the last 10 years of historical data (non-inclusive of current year) after applying an 11 day smoothing mean window. Return Period (RP) is calculated empirically based on all historical data up to the current year (non-inclusive). The second resource (aer floodscan 300s SFED 90d.zip) is a zipped file containing AER FloodScan estimated daily flood fraction (0-100%) gridded data at approximately 10 km resolution (300 arcseconds equivalent to approximately 0.083 degr Publisher: JANUS Atmospheric and Environmental Research (via Humanitarian Data Exchange (UN OCHA)). Delivered as a cleaned, analysis-ready Excel table.

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15.38 MB

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JANUS Atmospheric and Environmental Research