EWN Feature Tools Workflow

The Engineering with Nature (EWN) feature tools aid in implementing engineering features into natural environments. The EWN feature tools can be used as follows:

1. Create an EWN Features coverage.

Create a new coverage with the "EWN Features" type. 1. Create new coverage from scratch. Select Map Data in the Project Explorer and use the New Coverage right-click command. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage. 2. Create new coverage from an existing coverage. Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage. Use the Rename command to give the coverage a new name. Change the coverage type.

2. Use the appopriate EWN tool.

1. Use the Generate Elevation Raster tool. Right-click on the EWN features coverage and select EWN Tools | Generate Elevation Raster. In the Generate Raster Elevation dialog, define the source geometry and output file. 2. Use the Generate Roughness Dataset tool. Right-click on the EWN features coverage and select EWN Tools | Generate Roughness Dataset. In the Generate Roughness Dataset dialog, define the target geometry, initial values, and feature coverages. 3. Use the Insert EWN Features tool. Right-click on the EWN features coverage and select EWN Tools | Insert EWN Features. In the Insert EWN Features dialog, define the target geometry, element area change limit, and feature coverages. 4. Use the Insert ADCIRC Levee tool. Note that this tool requires an ADCIRC Boundary Condition coverage as well as an EWN Features coverage with polygons given the ADCIRC Levee attribute. Right-click on the EWN features coverage and select EWN Tools | Insert ADCIRC Levee. In the Insert ADCIRC Levee dialog, define the source geometry, ADCIRC boundary condition coverage, and element area change limit.