Pond Volume_V1.dyn (50.0 KB) Hi all, I’m looking for some guidance on how best to approach a pond volume and contour area analysis** using Dynamo. Goal: Given a TIN surface of a pond bottom and a defined top-of-pond elevation, I need to: Calculate the pond volume, and Extract areas for every 0…

[image] This is what I did for C3D 2022. I have to do some testing to make sure it works but I do know it would be way better and easier in 2025/26.

Based on your description, it sounds like you only have a surface for your bottom and want to pick an elevation that you then calculate the values in between, is that correct? If so, you need to also select a slope between the two in order to calculate the intervals. You could then use some mathema…

I have a full Tin surface outlining the bottom of the pond and then a flat elevation for the top of pond. Bottom of pond: [image] (Tin Surface) Top of pond: [image] (Dynamo Surface)

Can you convert a tin surface to a dynamo solid?

Not directly, but you can probably create a solid using the Solid.ByLoft nodes. You have the outline of the top, this would be one of the cross sections used in the ByLoft. You would just need to generate the outline of the bottom to use as the second cross section for ByLoft.

Assuming you are in 2025 or 2026 and therefore Dynamo 3.0 or later, then you can read in the tin surface as triangles and convert to a mesh via Python. Fortunately the mesh object which will include the full benefits of the new mesh nodes that incorporate the previous mesh toolkit package. From the…

[image] qnliebbe: Can you convert a tin surface to a dynamo solid? :backhand_index_pointing_down: [image] Geometry to Solid Civil 3D Hello, I have been trying in civil 2025 to generate a solid based on the surface TIN of the terrain but I can’t generate…

Civil 3D Pond Surface Volume and Contour Analysis

Civil 3D

zachri.jensen July 14, 2025, 7:38pm 9

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Civil 3D Pond Surface Volume and Contour Analysis

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