I used a dataset from an offset stream channel along the San Andreas
fault in the central Carrizo Plain, California.
Here are the data. Here is a 3D view of the site:
Here is a view of the site on the ground.
I tried three methods so far:
Here is the map. Note that it also shows the data in the yellow
Here is the map:
Here are two views of the dataset generated using the Triangular Irregular Network contouring capability of Deltagraph: