Define HAND-based Flood Depth and Extent from Table
Hello good People. Recently i am working on HAND based Flood depth toolbox from ArcHydro tools for inundation mapping. For "Define Hand- based Flood Depth and Extent from Table" tool inputs are HAND raster, catchment raster and flood depth table. I have different flood depth level at different reach. How do i assign different flood depth at different stream? what is the format of "flood depth table"? What are the other data i need to input?
This is my "StreamLink" files attribute table
Here is the data schema that will make it work:
Catchment raster needs to have VALUE field (unique identifier of the catchment raster). This is the raster value.
Flood depth table needs to have two fields (example below):
1. COMID (Long integer) - this needs to match the VALUE field for the catchment you are assigning depth for.
2. H (Double) - depth that you want to "flood" catchment with.
That's it (note that the HAND raster should have been derived using streams/drainage lines matching the catchments).
