How to create stream network with 3D lines

[AkoShwan]

Hi everybody,

I am using hydrology tools in ArcGIS Pro for creating stream network polylines, but they are with zero elevation. How to assign elevation from the DEM to these created stream polylines?

Regards,

[DuncanHornby]

You need to be using the interpolate tools in 3D Analyst, for example - https://pro.arcgis.com/en/pro-app/latest/tool-reference/3d-analyst/interpolate-shape.htm

[AkoShwan]

Thank you so much. I tested it, but still the features are without elevation! I exported features to CAD, there the same they had zero elevation!