Create GeoRAS Layers

Description

Create GeoRAS compliant data structures (feature classes and attributes) and optionally load existing data into those feature classes. The following GeoRAS layers can be created:

• Banks
• Flowpaths
• LandUse
• Rivers
• StorageAreas
• XSCutlines (cross-sections)

One or multiple layers can be selected. The attributes for each of the layers is defined in the template database named RASTemplateNoPrj.gdb. Besides attributes, the template layers also have default spatial reference that will be used if the target workspace is geodatabase (default is National Albers Projection used for NHDPlus HR raster data). If target workspace is a feature dataset, the GeoRAS layers will be placed into it and its spatial reference will be imposed. It is recommended that target workspace is a feature dataset that has the same spatial reference as the underlying DEM.

Optionally, if source features are provided, their geometry will be loaded into the created feature classes. Note that the input features do not have to have the attributes that match GeoRAS attributes, but if they do have them, these attributes will be populated as well. All feature classes are created by copying them from a template feature class, so structure (attributes) of these feature classes is controlled via the template gdb.

Output feature class names are fixed. The option Overwrite Existing controls whether the tool will overwrite an existing feature class in the target workspace with the same name as GeoRAS layers to create.

Usage

Parameters

Direction	Type	Parameter Name	Data Type	Dialog Reference
Input	Required	Target Workspace	GPComposite	This must be an existing geodatabase or a feature dataset within the geodatabase.
Input	Optional	Layer to Create	GPValueTable	This is a table indicating: Layer Type to create. Names of the created feature classes is fixed and matches the name of the layer type. Source Features to load into the created layer if the source is provided. If not provided, and empty feature class will be created.
Input	Required	Overwrite Existing	GPBoolean	Option that controls if an existing feature class in the target workspace with the same name as the GeoRAS feature class to be created will be overwritten. If check box is checked, the existing feature class will be overwritten. Otherwise, the existing feature class will be left intact.
Output	Derived	Output Workspace	DEWorkspace