Flood Mapping Tool
After successful simulation of the model, Flood Mapping Tool generates one dimensional flood boundary within the subcatchment. Flood Mapping Tool primarily works with Digital Elevation Model (DEM) layer and simulated water surface elevation (WSEL) of the junction layer. The tool calculates flood depth by subtracting the simulated water surface elevation value from the Digital Elevation Model (DEM) dataset.
The Flood Mapping Tool manages GIS datasets in a geodatabase while performing the user assigned tasks. This tool allows users to process DEM data, create and manage Inundation Depth layer and Flood boundary layer. When the (
) button is clicked the tool interface appears like Figure 6.36.
There are two major functional segments in the tool interface such as:
- Workspace and raw DEM (Primary input)
- Specifying Inundation Depth Layer name and Flood Boundary Layer name
Primary Input
When launched, the Flood Mapping Tool requires the user to set a geodatabase name where it will manage and store the processed flood map extent. In addition, the user will need to provide a DEM raster or grid data that represents the topography of the project area. Note that the input DEM must have linear units in order to generate flood boundaries accurately.
Final Component
The second component in the interface enables users to generate the flood map.
Inundation Depth Layer Name is a name field which represents the name of the inundation depth obtained by subtracting water surface elevation layer (WSEL) from digital elevation model (DEM).
Flood Boundary Layer Name is a name field which represents the name of the generated flood area boundary.