Draw a map with elevations from survey data

[Dragonscribe]

I'm surveying my yard for a drainage problem and I have a bunch of datapoints in the form [angle. distance, elevation] or [x, y, z.]
I would like to plot these to scale so I can visualize the drainage pattern and overlay a new one to figure out how much fill I need. Ideally this would allow 3d viewing.
I have tried charting in Excel, but it's very hard to get it in scale and 3D viewing is really generating a new chart with different viewing angles.
I've tried a couple of drawing/paint programs but haven't figured out how to get the scale right.
I suspect software to do this exact job is specialized and expensive but I'm hoping there might be a method in Google Sketchup or some other app that that I haven't stumbled across.
Any ideas will be very welcome.

[torres-no-tan-magnifico]

This may help you:

https://www.techsupportalert.com/bes...ad-program.htm