RAPID FLOOD MAPPING USING SATELLITE DATA

In case of a possible flood there is always a shortage on hydrological gauge data. Also, in remote areas in the world, there is in most cases no real-time information on flood extent, which hampers efficient mitigation and aid.

In the innovation track 'Rapid Flood Mapping', we connect near real-time flood information (as measured by satellites) to maps that can be used by the water manager for the two main purposes of improving existing flood forecasting systems and models, and by flood extent mapping for mitigation actions.

A combination of satellite images was used to create flood maps for the Mekong area, where a focus is put on the Tonle Sap lake (Cambodia). As a lot of the Mekong area is situated in remote areas, flood extent maps are a welcome addition to existing hydrological information. They can be delivered on an operational basis by combining information and displaying them in the Delft-FEWS system. Furthermore, we have created "virtual sensors" that measure water levels. These sensors are all made from satellite data (ESA's River and Lake service, SAR and optical data). In this way, more gauge data is added to the flood management system.

For more information on this topic, contact Rogier Westerhoff or read more:

Mission Flood Control 2015

“A really substantial improvement in operational flood protection worldwide.”