wrote in message
oups.com...
DUH ......Any given survey uses multiple elevations to show contour
lines.

Irrelevant to the point.

It just happens the apron right infront of my hangar was a
reference spot for one of those data points.

ONE of those data points. Was the reference spot marked with the elevation
at that point?


--
Matt
---------------------
Matthew W. Barrow
Site-Fill Homes, LLC.
Montrose, CO