HydroComplete
Web app
Open CAD Studio add-on

Storm sewer analysis inside Open CAD Studio.

Install from the OCS Plugin Manager, import Civil 3D sewer geometry with HC_CIVIL_IMPORT, run Rational + Manning HGL, and export HTML reports free — Pro unlocks PDF via HC_ACTIVATE.

Get Pro access Install latest (v0.5.0+)

Separate SKU from HydroComplete for Civil 3D. Keys are not interchangeable.

Workflow

Three commands to a report.

Install plugin

OCS Plugin Manager → marketplace → HydroComplete → install → restart OCS. Requires Open CAD Studio v2026.36; use v0.5.0+ of the plugin.

Build the network

LandXML import, manual HC_PIPE_ARGS, or HC_CIVIL_IMPORT from Civil 3D plan geometry. Set IDF with HC_PARAMS PRESET.

Analyze & report

HC_ANALYZE then HC_REPORT (free HTML). Pro: HC_ACTIVATE email hc_live_… then HC_REPORT_PDF.

Included

Engine parity with Civil 3D HydroComplete.

Rational + IDF Manning capacity HGL profile HC_CIVIL_IMPORT Drawing param persistence Atlas 14 presets BMP / WQV Pro PDF export
Open CAD Studio Pro

Purchase or join the beta list.

Pro keys are issued for product opencad only. Civil 3D keys will not activate this plugin.

Buy Pro — $149/year

Unlock HC_REPORT_PDF and Pro export. Key emailed after Stripe checkout.

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