For bench marked peaks, we stick with the NGS-published elevation, which I believe most of them have been converted to the latest and greatest Geoid model. However, we do have a lot of GNIS peaks that aren't bench marked. For some (the ones the peak baggers blog about), we send up a team with a survey-grade GPS and get an OPUS solution of the elevation, which is within 4-6 in of true.
From: Mike Thompson [mailto:[email protected]] Sent: Sunday, June 16, 2013 8:13 PM Cc: talk-us Subject: Re: [Talk-us] GNIS? > BTW, for most peaks are there not "official" elevations? The National Geodetic Survey maintains a datasheet for each benchmark, including those on peaks (http://www.ngs.noaa.gov/cgi-bin/ds_radius.prl). The datasheet lists the official elevation. Much easier, although less fun, than summit each peak with GPS equipment.
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