Hydraflow Express Extension for AutoCAD Civil 3D 1.00

Hydraflow Express Extension for AutoCAD Civil 3D is a suite of fast, lightweight hydrology and hydraulics calculators integrated with the Civil 3D environment. It helps engineers perform common drainage design and check tasks without building a full network model, making it ideal for preliminary design, QA/QC, and quick what‑if scenarios.

Key capabilities:

• Runoff and hydrograph calculations using widely accepted methods (e.g., Rational Method, NRCS/SCS).
• Culvert, channel, storm inlet, weir, and orifice sizing and checks.
• Street and gutter flow evaluations, including spread and inlet capture.
• Detention/retention basin sizing with stage–storage and outlet structure modeling.
• Simple data entry with tabular/graphical results and printable reports.
• Designed to work alongside Civil 3D surfaces and pipe layouts for efficient iterations.

Typical users include civil engineers and drainage designers in land development and transportation who need rapid, defensible computations within a Civil 3D workflow. Availability and specific features may vary by Civil 3D version.

Hydraflow Express Extension for AutoCAD Civil 3D is developed by Intelisolve. The most popular version of this product among our users is 1.0. The name of the program executable file is HydraflowExpress.exe.