Updates:

Now supporting: - >= ArcGis 10.5 - ArcGis Pro

Floodwater Depth Estimation Tool

The Floodwater Depth Estimation Tool (FwDET) calculates floodwater depths using a digital elevation model (DEM) and a flood extent polygon shapefile. Within this repository resides the two versions of FwDET. Version 1, featured in Estimating Floodwater Depths from Flood Inundation Maps and Topography [Cohen et al. 2018], best works in inland riverine regions and has been implemented using both Arcpy and QGIS. Version 2, features an improved algorithm which better solves coastal flooding as well as fluvial. Version 2 implements a much different approach that is considerably more computationally efficient, drastically reducing run time compared to version 1 of the tool.

FwDET can be executed either as a standalone Python script or via a toolbox in ArcMap (v1 & v2) or QGIS (v1). Version 1 and 2 have been implemented via Arcpy scripts and Arc Toolboxs with version support for >= ArcGis 10.5 and ArcGis Pro. Version 1 also has both a standalone and plugin open-source QGIS version, that out preforms the ArcMap computationally. The plugin/toolbox versions can be found inside the fwdet directory. The standalone versions of the scripts are located under fwdet/source.

How to use FwDET ArcMap Toolbox

1. Clone this repository or download the toolbox file.
2. Open ArcMap and navigate using the catalog to the directory containing FwDET.tbx.
3. Expand the toolbox and double click on the tool version you wish to use.

How to use FwDET QGIS Plugin

1. Clone this repository or download the plugin file.
2. Open QGIS and open the processing toolbox panel.
3. Click on the small python logo in between the gears and clock icons, select add script to toolbox.
4. Expand the Scripts folder inside of the toolbox panel and open the folder FwDET and double click on FwDET v1.

Publications from this work:

Cohen et al. 2019 -- The Floodwater Depth Estimation Tool (FwDET v2.0) for Improved Remote Sensing Analysis of Coastal Flooding

Cohen, et al. (2017), Estimating Floodwater Depths from Flood Inundation Maps and Topography, Journal of the American Water Resources Association, 54 (4), 847–858. doi:10.1111/1752-1688.12609

Contacts:

Sagy Cohen

Austin Raney

Other resources:

SDML Website

FwDET CSDMS Tool Repo Description