To Import Data into and Export Data from HEC-RAS Software

This procedure describes only how to import a GEO file into, and export an SDF file out of, HEC-RAS software. Please refer to the HEC-RAS Help for information on how to use the application itself.

1. Start the HEC-RAS application.
2. Click Edit Geometric Data.
3. In the Geometric Data dialog box, click File menu Import Geometry Data GIS Format.
4. In the Import GIS Format Data File dialog box, navigate to and select the GEO file you exported from AutoCAD Civil 3D. Click OK.
5. In the Import Geometry Data wizard, confirm the import geometry data and click Finished - Import Data.

   The geometry data will be visible in the Geometric Data window.

6. Complete your analysis.
7. In the main HEC-RAS window, click File menu Export GIS Data.
8. In the GIS Export dialog box:
   • Under Results Export Options, select Export Water Surfaces.
   • Select any profiles you may have created during the analysis.
   • Click Export Data. An SDF file is created.
9. Follow the steps in To Import Data from HEC-RAS.