Brass monuments permanently affixed in concrete or surrounding bedrock indicate accurate geodetic reference positions within the National Geodetic Survey's horizontal and/or vertical datums.
With the NOAA 200th Celebration coming to a close at the end of 2007, maintenance of this Web site ceased. Updates to the site are no longer being made.
Brass monuments permanently affixed in concrete or surrounding bedrock indicate accurate geodetic reference positions within the National Geodetic Survey's horizontal and/or vertical datums.