Hydraflow Extensions

Autodesk Hydraflow Extensions® within Autodesk Civil 3D® is a hydrology and hydraulics modeling tool. Users can design a hydrology model and then analyze their design for optimization of the system. Additionally, users can create legal documentation, including storm water reports, watershed analysis, and hydraulic analysis of streams, rivers, and storm sewers.

Free for 30 Days


  • Getting Started
  • Storm Sewers
  • Hydrographs
  • Express Extension