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Figure 10 from NOAA Technical Report NOS NGS 67 — Diagram of fictional case study location. The arrows correspond to hypothetical rates of ground subsidence. (Image: NGS)

NGS revises NOAA report on working in the modernized NSRS

April 7, 2021

The National Geodetic Survey (NGS) has revised an important technical document on the modernized National Spatial Reference System […]

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This article is tagged with David Zilkoski, floodplain, National Spatial Reference System, NGS, NSRS, Texas, U.S. National Geodetic Survey and posted in Opinions, Survey

Example of a Large Difference Between Geoid12B and Geoid18 in Western North Carolina (Screenshot: National Geodetic Survey)

How to use the NGS Beta GEOID18 web map

June 5, 2019

This column discusses the results of the National Geodetic Survey (NGS) beta hybrid Geoid18 model and the differences […]

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This article is tagged with Beta Geoid18 Web Map, David Zilkoski, GEOID12B, GEOID18, GPS on BMs program, hybrid geoid model, National Geodetic Survey, NGS and posted in Opinions, Survey