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Philippines

Dagupan - Philippines, Wind storm - 17/10/2015 Delineation Map - Monit02

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Map Production
The present map shows the flood delineation in the area of Dagupan (PHILIPPINES). The basic topographic features are derived from public datasets, refined by means of visual interpretation of pre-event ESRI World Imagery. The layer 'Land subject to inundation' includes areas such as riverbed, rice fields, river meadow and marsh. Thematic layers, assessing the delineation of the event, have been derived from post-event COSMO-SkyMed image.
All satellite images have been radiometrically enhanced, orthocorrected with RPC approach (using SRTM elevation data) and coregistered to the pre-event image.
The estimated geometric accuracy of this product is 10 m CE90 or better, from native positional accuracy of the background satellite image.
The estimated thematic accuracy of this product is 85 % or better, based on previous experience in using high-resolution SAR for flood extent delineation.
Please be aware that the thematic accuracy might be lower in urban and forested areas due to known limitations of the analysis technique.
Only the area enclosed by the Area of Interest has been analyzed.