shrug-l: Elevation Unit Reference for NAVD88

Thomas, Jim jim_thomas at
Tue Jul 10 08:50:10 EDT 2012

I all,

I have a survey question related to elevation units.  Since NAVD88 ZERO and MSL Zero are not necessarily the same, is it wrong to express elevation units that reference NAVD88 as 'FT AMSL'?  Or is 'ft' more appropriate?

I've seen data stored this way and I would like to suggest the appropriate unit.


Jim Thomas, GISP | GIS Analyst | Golder Associates Inc.
9428 Baymeadows Road, Suite 400, Jacksonville, Florida, USA 32256
T: +1 (904) 363-3430 | F: +1 (904) 363-3445 | E: jim_thomas at<mailto:jim_thomas at> |<>

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