For a more authoritative answer took to the National Geodetic survey (NGS) http://www.ngs.noaa.gov/cgi-bin/ds_pid.prl
The Benchmark at the summit of Mt Cleveland has a PID of TM1009 Do note that the latitude and longitude are in DMS.SSS format not Decimal Degrees This benchmark was originally established in 1901 so you will find heights and lat/longs from several different measurement systems. These could be NGVD1929, NAD 1927, NAVD1988, NAD83, HARN, ....., You should record both the horizontal and vertical measurement systems in OSM for whatever you use. C. On Sat, Oct 23, 2010 at 8:52 AM, Nakor <nakor....@gmail.com> wrote: > Hello, > > I was looking at peaks in Glacier National Park. There are quite a few that > have been imported from GNIS. NPS has also a database of such peaks. My > issue is that the databases are not consistent. If I take for instance Mt > Cleveland: > > > GNIS: 48.9250000 , -113.8480556 3175m (10417ft) > NPS: 48.9227541, -113.8472346 3190m (10466ft) > > That's a little bit more than 1/8 mile off horizontal and 50 ft off > vertical. Is there any other source of information to try and figure out > what is the correct data? > > Thanks, > > N. > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-us > -- Carl Anderson, GISP cander...@spatialfocus.com carl.ander...@vadose.org
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