Workflow: To Import a Catchment Model into AutoCAD Civil 3D

Use this workflow after you have worked with a AutoCAD Civil 3D model in Storm and Sanitary Analysis.

Export your data from Storm and Sanitary Analysis using the Hydraflow Storm Sewers (STM) file format	The Hydraflow STM file is used as a data transfer file between AutoCAD Civil 3D and Storm and Sanitary Analysis. See "Exporting Hydraflow Storm Sewers Files" on page 498 of the Storm and Sanitary Analysis User's Guide.
Import the STM file into AutoCAD Civil 3D	The edits you made in Storm and Sanitary Analysis are preserved on import back into AutoCAD Civil 3D.