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Datum upgrade of the National Spatial Reference System (NSRS)

Friday, December 27, 2019   (0 Comments)
Posted by: DJ Kyle
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Datum upgrade of the National Spatial Reference System (NSRS)

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From Oct. 23: The well-publicized datum upgrade of the National Spatial Reference System (NSRS) administered by the National Geodetic Survey (NGS) has reached another milestone. In conjunction with the National Institute of Standards and Technology (NIST), NGS has filed a notice with the Federal Register to deprecate the use of "U.S. Survey Foot" on December 31, 2022 and formally adopt the "foot" (previously known as the "international foot"). The Federal Register announcement and feedback page can be found here. Please review the information and provide any feedback on the Federal Register page.

This change is in concert with the upcoming overhaul of the NSRS and datum changes by NGS in 2022-2023. For more details on the timeline of the definition of the “foot,” visit the NIST U.S. Survey Foot page here:

Currently, there are a variety of legislative specification for measuring standards nationwide and within the U.S. territories. For your state, see the graphic below:

Dr. Michael Dennis of NGS has produced a webinar discussing the ramification of the “foot” and why the change is necessary. To view the webinar, please visit the NGS website here.

For additional information on the upcoming datum change, visit the NGS New Datums page here.

Reference Note:
Changes to the Template Draft NSRS Legislation which was published on the NSPS webpage are as noted below:

How to use this template:

  • changes/additions in 1st and 2nd lines of item 3)
  • changes in the 3rd line of item 3)a.
  • Item 3)c added
  • Item 9) deleted, and replaced by renaming Item 10) to be Item 9)
  • Added a new Item 10)

I. Acronyms:

  • Acronyms changed to Abbreviations in the title and in the 1st sentence
  • Revised wording in the bolded statement at the end of the definition of *PCS

II. The ≤state≥ Plane Coordinate System:

  • Revised wording at the end of third line of the 1st paragraph
  • Changes in the first line of the 2ndth paragraph of actual text
  • Changes in the second line of the 2nd paragraph of actual text
  • Changes in the 5th, 6th ,7th , and 8th lines of the 2nd paragraph of actual text

The updated document is being uploaded to the NSPS website.

Republished from December 26, 2019 NSPS News and Views.

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