Difference between revisions of "HEC-RAS to TUFLOW"

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[[File:HECRAS_SDF_Export.JPG|600px]]
 
[[File:HECRAS_SDF_Export.JPG|600px]]
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Select the following items within the GIS Export window:
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*River (Stream) Centerlines
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*User Defined Cross Sections
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*Entire Cross Section
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*Reach Lengths
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*Bank Stations
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*Levees
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*Ineffective Areas
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*Blocked Obstructions
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*Manning's n
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[[File:HECRAS_SDF_Selection.JPG|600px]]
  
 
== Utility Description ==
 
== Utility Description ==

Revision as of 05:14, 5 February 2015

Introduction

This page contains a brief introduction to the methods of converting HEC-RAS model inputs into a format which compatible with TUFLOW. If you have any suggestions to be included in these pages, please email support@tuflow.com.

Model Geometry Conversion

The sdf_to_GIS.exe utility converts HEC-RAS geometric data data into TUFLOW compatible GIS and csv input format. The utility outputs include:

  1. Centerline location data in GIS format
  2. Cross-section locations in GIS format
  3. Cross-section data in csv format

The GIS format type can be either *mif or *shp. Options are also available to automatically trim the processed cross-section GIS and csv data to the main channel region between defined levee markers. The HEC-RAS model inputs need to be in SDF format (HEC-RAS export format), and must be geo-referenced using a real world projection.

Input Processing (HEC-RAS)

Export the HEC-RAS sdf file using: File >> Export GIS Data...

HECRAS SDF Export.JPG


Select the following items within the GIS Export window:

  • River (Stream) Centerlines
  • User Defined Cross Sections
  • Entire Cross Section
  • Reach Lengths
  • Bank Stations
  • Levees
  • Ineffective Areas
  • Blocked Obstructions
  • Manning's n


HECRAS SDF Selection.JPG

Utility Description

The utility requires GIS projection information to correctly translate the spatial dataset from SDF format to *mif or *.shp format. This is done by including either a projection or header file in the same folder directory as the SDF file. The utility will use the projection information from this file for the data conversion.

  1. mif output: Projection.mif or Header.mif
  2. shp output: Projection.prf or Header.prj

The following error message will be produced if projection information is not available:

ERROR - A Header.prj or Projection.prj file does not exist in folder


Example Syntax (*.mif output)

Description: Convert HEC-RAS sdf data to mif format, trimming cross-section at levee markers (default trim option):

  • sdf_to_gis.exe -mif hecras_example.sdf
  • Description: Convert HEC-RAS sdf data to mif format, not trimming cross-section at levee markers:

  • sdf_to_gis.exe -mif -notrim hecras_example.sdf
  • Example Syntax (*.shp output)

    Description: Convert HEC-RAS sdf data to shp format, trimming cross-section at levee markers (default trim option):

  • sdf_to_gis.exe -shp hecras_example.sdf
  • Description: Convert HEC-RAS sdf data to shp format, not trimming cross-section at levee markers:

  • sdf_to_gis.exe -shp -notrim hecras_example.sdf
  • Utility Output (TUFLOW)



    Boundary Condition Data Conversion (coming soon)