
Once the migration configuration is complete, export the pipe network from the Civil 3D Workspace>Analyze tab>Design Panel>Edit in Storm and Sanitary Analysis. An explanation of this process can be found here: Before we export the model, make sure that your pipe network migration settings are set correctly. SSA gives us the ability to run SWMM models directly if we chose but moving back and forth from SWMM directly does have benefits. The first step in creating an EPA SWMM model from a pipe network is exporting the pipe network to Storm and Sanitary Analysis (SSA).

Luckily, Storm and Sanitary Analysis is just that intermediary and it is installed with Autodesk’s Civil 3D. Currently, there is no way to convert a Pipe Network into a SWMM model without using an intermediary software.

Converting a Civil 3D Pipe Network into an EPA SWMM model is a relatively straight-forward process, if not the most directly.
