HydraStorm
Storm Drain Design for Civil 3D

HydraStorm

Civil 3D plugin for storm drain hydraulic design. Design pipe networks with HGL/EGL analysis, junction loss calculations, rational method hydrology, and automatic pipe sizing — all without leaving Civil 3D.

  • Real-time HGL/EGL analysis with interactive profile view
  • Junction loss calculations (HEC-22, iSWM, custom)
  • Rational method hydrology with NOAA Atlas 14 IDF curves
  • Automatic pipe sizing to meet design criteria
  • Design standards library for local municipality criteria
  • Excel/CSV export & HydraLink integration
View Pricing Learn More Starting at $200/yr

System Requirements

Designed for professional engineering workstations.

HydraLink

  • OS: Windows 10 or later (64-bit)
  • RAM: 4 GB minimum, 8 GB recommended
  • Disk: 250 MB free space
  • Internet: Required for license activation and map tiles

HydraStorm

  • Host: Autodesk Civil 3D 2025 or later
  • OS: Windows 10 or later (64-bit)
  • RAM: 8 GB minimum, 16 GB recommended
  • Internet: Required for license activation and NOAA data

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