What's New – Download of risk polygons

Jul 11, 2016

For certain raster-based flooding layers (e.g. sea-level rise, flooded areas of a Flash Flood Map, etc.), flood masks can now be downloaded as polygons. The polygons are simplified to greatly reduce file size and feature complexity and this makes them ready for use in GIS tools such as MapInfo, or as a basis for automated vector-based risk analysis and early-warning systems. Multiple thresholds can be specified to efficiently generate flood masks for different events, and the amount of simplification can be specified to control the complexity of the generated mask polygons.

Example of 1.34 m sea-level rise (blue area), with a downloaded (and imported) mask polygon in black on top.