Flood Depth Mapping

Information content:

Maps providing the maximum water depth per pixel for a specific flood extent map. The service is co-developed by LIST and CIMA Foundation, with WASDI Sarl.

Service Description:

This service provides high-resolution maps detailing the maximum water depth per pixel for specific flood extents, using as ancillary layer a Height Above Nearest Drainage (HAND) re- elaboration of the Copernicus Digital Elevation Model (COP-DEM_GLO-30). The core algorithm applies dynamic windows to execute the overlaying calculations as adjusted as possible. The user must provide as input a flood extent map that is either a Third Party product or the product generated using the Flood Extent Mapping service.

Spatial Scale of Observation:

The spatial scale/resolution depends on the input flood extent map. In case the flood extent is extracted from the Flood Event Detection service, then the resolution will be 20 m.

Temporal frequency:

This is a one off service providing flood depth estimates for a specific flood extent map.

Nature of service:

This is an open source service.

Benefit of service:

The flood depth mapping service computes the maximum depth of flood water in each pixel. It can be used during a flood event and outside an emergency basis for prevention and risk assessment. Combined with vulnerability data provides a critical input for infering the flood impact.

Execution Parameters:

N/A

Input:

Flood extent map Third Party

Input:

Output:

The flood water depth map is provided as a Georeferenced raster (GeoTIFF), with water depth expressed in decimetres