There are a couple of ways to do this, but here is a short video demonstrating how to extract user contours from a surface.īasically, what I would do, is on your 'Existing Ground' surface, create and extract all the contours (your various water surface elevations), then create a surface from each extracted polyline, and use the Volumes Dashboard (shown in video) to calculate your volumes for each (Base = EG, Comparison = WSE).Īnother way you could do this is to extract the contours the same way, and create a 'Bounded Volume' within your 'Existing Ground' surface using each extracted contour as the bounding element (also briefly shown in video). Im assuming you have an 'Existing Ground' surface.

So basically, you have a pond and you want to know how much water it contains at a certain elevation. I would be careful of the geometry of the new feature line and corresponding surface, as to not pick up extra cut/fill from extraneous wrote:

Using the feature line raise/lower feature and regenerating the volume tool makes it easy enough to find the storage volume at different depths, so making several surfaces for each depth is not necessary. Creating a new surface with only that new feature line as the definition and using the surface volume panorama tool would give you proposed storage volume. How do I go about that?įirstly, have you modeled the pool and levy as C3D surfaces? If the answer is yes, then you could create a new site and draw a feature line in that site representing the proposed waterline elevation you are working with. I think I want to build a flat surface at each proposed waterline elevation and then compare the bottom of the pool area and the inside toe of the levy slope surfaces to these proposed waterline surfaces. The levy and pool areas are different surfaces. Basically, I have a levy I've drawn across a valley and a pool area that is cut out in front of it. I can do this easily by hand on paper, but I'm sure there is a better way to do it with C3D.

I'd like to figure the storage volume of a pond at different waterline elevations.

Autodesk autocad civil 3d create pond