Autodesk Storm and Sanitary Analysis (SSA) is a designer’s CAD package. It’s not meant for your everyday drafter, even designer’s might have some trouble with the bulk of this software. This is really a package for civil engineers doing primarily gravity flow hydraulic designs. The beauty of it is that it fully integrates into Civil 3D and engineers can take the pipe and surface models that designers have put together in that package and use it as a basis for their hydrological design with a single click of the mouse. Once the design is done is SSA, it can easily be imported back into Civil 3D where all the design components are automatically updated to reflect the hydrology requirements.