Here is the metadata got from Open Topography. (it is around Napa where I had been visited a great restaurant, GrayStone).
The greatest thing for me is it clearly describes coordination:
Horizontal Coordinates: UTM Zone 10 N NAD83 Meters
Vertical Coordinates: Geoid89
...
Data Selection Coordinates:
Xmin: 531159.776
Xmax: 534629.345
Ymin: 4272683.453
Ymax: 4280409.657
Classifications: All
Base on Horizontal and Vertical Coordinates, I can query from Oracle Coordinates references table and decides which SRID I should choose.
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