Website Maintenance:
NGS is transitioning to “HTTPS-only” on December 31, 2016. If you have unexpected website errors, please contact 12.27.2016

Save the date!
The National Geodetic Survey will host the 2017 Geospatial Summit April 24-25, 2017 in Silver Spring, Maryland 06.30.2016

2016 Experimental Geoid Models xGEOID16A and xGEOID16B Now Available 07.21.2016

ADJUST and UTILITIES - An updated version of ADJUST (and its utilities) has been released 06.08.2016

In The News

01/12/2017 - 'Coastal Elevations' Presentation a High Point at Estuaries Summit

NGS hosted a standing-room-only turnout for the presentation "Coastal elevations explained: How accurate are your marsh elevations and tidal datums, and what does that mean for your project?" at Restore America's Estuaries 8th National Summit in New Orleans... more

01/05/2017 - Improvements to NGS' Online Positioning User Service(OPUS)

NGS recently upgraded OPUS, which provides simplified access to high-accuracy National Spatial Reference System (NSRS) coordinates, to improve results in areas where Continuously Operating Reference Stations (CORS) are distributed unequally... more

12/15/2016 - Communicating NOAA Science through Master Naturalist Program

NGS taught a Maryland Master Naturalist class on coastal geomorphology, wetlands, and habitat resiliency in the face of sea level rise to showcase the use of a high-accuracy vertical control network... more

Previous NGS News Stories and Notices