NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Determining Elevation with an Altimeter
From: Jared Sherman
Date: 2002 Mar 1, 00:31 -0500
From: Jared Sherman
Date: 2002 Mar 1, 00:31 -0500
Ummm...not to be a party pooper, but there is a web site (USGS?) that lists all USGS benchmark sites and their latest recorded positions along with any adjustments noted. You can interogate the site by giving it a lat/lon box and asking for a list of any benchmarks in it, so it may be possibly to simply locate a nearby benchmark and confirm the elevation and survey date. There will be notes about the map datum and vertical offset as well. I think someone from this list had originally given it to me, I can't seem to locate it right now.
