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The Civil 3D® Interface, known as InfoDrainage for Civil3D®, has been designed to allow engineer engineers to exchange information with InfoDrainage by importing and exporting drainage networks within Civil 3D® 2019, 2020 and 2021.


The software will recognise its own data so information is maintained should multiple iterations of design be required as is often the case on some developments.

Access to InfoDrainage for Civil 3D® is only available at the Advanced Tier and above. For more information about the various tiers available, refer to InfoDrainage Tiers.

This interface is an optional component so is provided as a separate installer that can be installed as required - . Refer to Installing InfoDrainage for Civil 3D® for installation instructions.

titleAutoCAD® Support

The This InfoDrainage plugin is designed to work only with Civil 3D® as it utilises the full 3D networks it provides. InfoDrainage continues to Import and Export CAD information from/to DWG/DXF.

Getting Started

Once installed the plugin will automatically add in the required ribbon when Autodesk® Civil 3D®2019, 2020, or 2021 is launched. This will provide the following ribbon:


The commands are:

Export to InfoDrainage - Export one or more pipe network(s) in the drawing to an IDDX file for use in InfoDrainage.


Export to InfoDrainageINID_ExportToInfoDrainage
Import from InfoDrainageINID_ImportFromInfoDrainage
Part Mapping ManagerINID_PartMappingManager

Objects are mapped as follows:

InfoDrainage object

Civil 3D® object

Closed Connections (including Pipes)

Civil 3D® Pipes

Open Connections

Civil 3D® Corridors

Conceptual Connections  (no delay/lagged flow)


Simple Junctions

Null Structure

Manhole (with dimensions)

Circular/Rectangular Structure

Stormwater Control

Civil 3D® Surface


Null Structure


Null Structure