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National Spatial Reference System

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A survey marker (metal disk on square concrete pad) and commemorating plaque that is part of the NSRS.[1][2]

The National Spatial Reference System (NSRS), managed by the National Geodetic Survey (NGS), is a coordinate system that includes latitude, longitude, elevation, and other values. The NSRS consists of a National Shoreline, the NOAA CORS Network[3] (a system of Global Positioning System Continuously Operating Reference Stations), a network of permanently marked points, and a set of models that describe dynamic geophysical processes affecting spatial measurements. The system is currently based on the North American Datum of 1983 (NAD 83) and North American Vertical Datum of 1988 (NAVD88).[4]

The North American-Pacific Geopotential Datum of 2022 (NAPGD2022) is a vertical datum set produced by the U.S. National Geodetic Survey to improve the NSRS.[5][6][7] It will replace the NAVD88 with a new geopotential datum.[8] In association with this release, a new, time-dependent geoid model, GEOID2022, will also be released.[9] The release date for these models was planned for 2022 but they have been delayed.

The North American Terrestrial Reference Frame of 2022 (NATRF2022) is also planned as replacement for NAD83. NATRF2022 will be aligned to the International Terrestrial Reference Frame (ITRF) 2020.[10]

See also

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References

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  1. ↑ "News: Lewis & Clark". NGS/NOAA. September 24, 2004. Retrieved November 20, 2025.
  2. ↑ "NGS Datasheet for marker DH4418 @ Chamberlain, SD".
  3. ↑ "NGS - NCN Homepage". geodesy.noaa.gov. Retrieved April 19, 2022.
  4. ↑ "The National Spatial Reference System" (PDF). National Geodetic Survey. May 28, 2019. Retrieved April 3, 2013.
  5. ↑ "Updated Implementation Timeline for the Modernized National Spatial Reference System (NSRS)". Federal Register. October 9, 2024. Retrieved November 20, 2024.
  6. ↑ "Delayed Release of Modernized NSRS, New Datums". geodesy.noaa.gov. Archived from the original on January 20, 2022. Retrieved February 1, 2022.
  7. ↑ "Frequently Asked Questions - FAQ - New Datums - National Geodetic Survey". geodesy.noaa.gov. Retrieved February 1, 2022.
  8. ↑ "New Datums - National Geodetic Survey". www.ngs.noaa.gov. Retrieved February 1, 2022.
  9. ↑ "Naming Convention - New Datums - National Geodetic Survey". geodesy.noaa.gov. Retrieved April 16, 2024.
  10. ↑ Šavrič, Bojan (October 21, 2026). "Prepare your data for the National Spatial Reference System modernization of 2022 in the U.S. (ArcGIS Blog)". ArcGIS Blog. Retrieved November 10, 2026.

Public Domain This article incorporates text from this source, which is in the public domain: https://www.ngs.noaa.gov/datums/newdatums/index.shtml

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