Are you sometimes concerned about whether your GPS is working properly? Now you can check it out!
On the East Side of the Denver Museum of Natural History, in the lawn area
directly in front of the IMAX entrance, is a USGS benchmark. To find
it, walk out the east entrance (from the snack bar), and proceed due east
until you are about 30 feet from Colorado Blvd. The benchmark is inside an
aluminum pipe with a hinged lid marked "Colorado Department of Transportation-City
Park" and is surrounded by a concrete collar. It is flush with the
ground. If you don't find it right away, walk either North or South 15 or
20 feet until you spot it. It is also 156 feet north of the Northeast corner
of the entrance gate to the museum on Colorado Blvd. The exact location of
the survey mark is:
39N 44' 52.71761"
104W 56' 27.43564"
Elevation is 5304 feet
This station's location was last verified by GPS observation in January 1998 by the National Geodetic Survey. A copy of the official station description is available in Geology.
If you are using topographic maps from USGS you need to Update the Declination
If you are having any problems with your GPS, pull up these very helpful web sites.GPS Update and GPS World