Creating a surface from existing contours.

[pottsk1]

I have an existing surface and I need to creat a surface using contour lines of a at the high point on a spillway to the bottom of my pond to calculate volumes. How do I do this?

Thanks in advance!

[BrianHailey]

http://docs.autodesk.com/CIV3D/2014/ENU/index.html?url=filesCTU/GUID-B6CF98F9-FF6F-4FF5-8022-60EB21A...

http://civil3dplus.wordpress.com/2011/08/13/adding-contours-to-a-surface-youre-doing-it-wrong/