HEC-RAS to TUFLOW

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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...

[File: HECRAS_SDF_Export.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


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)