Known Issues in Tech Preview: Autodesk Drainage Analysis for Civil 3D 2026

This document lists known issues in Tech Preview: Autodesk Drainage Analysis for Civil 3D 2026.

General Stormwater Control Issues
Stormwater control objects (ponds, underground storage, and channels) are not supported in Autodesk Construction Cloud.
Pipes cannot be connected to stormwater control objects during layout. To connect a pipe, create the pipe first and then make connections using its grips.
Pipes can be simultaneously connected to pipe network structures, ponds, and underground storage.
Pipe network structures cannot be connected to stormwater control objects.
Stormwater control objects are not currently supported in the Model Viewer.
There are only certain configurable default values for the stormwater control command and feature settings.
Preview graphics for stormwater control objects do not appear while rotating, mirroring, and scaling.
Stretch and offset commands are not currently supported.
After editing a value in a dialog box, pressing the Enter key has no effect.
Drop-down lists currently do not support keyboard navigation.
The option to style pick for stormwater control objects is not currently available.

Pond
Pond freeboard cannot be disabled in the Pond Properties dialog box.
The intersection object snap does not work with interior contours.
The deferred tangent object snap is currently not supported.
Rollover tooltips cannot be customized.
When creating a pond from an object containing arcs with a total angle > 180 degrees, grip editing is not supported.
Pond display properties are not inherited from the object layer regardless of the style components set to layer 0 and ByLayer.