Image Gallery:
"Interaction of Groundwater and Surface Water "

This image was contributed by Surfer user Tim Davidson:

I have been trying to determine the extent of connectivity between an aquifer and a major river. The attached figure is what I used to illustrate what I am trying to accomplish. Thanks to all the people at Golden Software for continuing to produce such a high quality, low cost product.

To breakdown the mapping process, I:

1 - Used LiDAR data to build regional study area topography.
   - blanked topo in cutout area.

2 - Built geology surfaces in local study area (south boundary coincides with north topo cutout).
  - geology surfaces are offset south by several metres from bottom to top.

3 - Use Map-Surface to build each layer with corresponding base colors.

4 - Overlay surfaces.

I should point out that although it looks like the entire block is 3D, the geology is only defined in a small block near the center of the block starting at the north boundary of the cutout. 

The key to making the cross section geology look good is the offset of the geology grids. If you don't do this, then an overlying base will cover those under it.

Tim Davidson, MSc., P.Geol.
tdavidson@shaw.ca

Return to the Main Gallery