Beta GEOID18 Model Released for Public Comment

Map of Beta GEOID18 Released

NGS will replace GEOID12B with GEOID18 in mid-2019. GEOID18 will be the last hybrid geoid model that NGS will create before NAVD 88 is replaced by the North American-Pacific Geopotential Datum of 2022 (NAPGD2022). Beta GEOID18 is now available for review. Hybrid geoid models convert NAD 83 ellipsoid heights to NAVD 88 orthometric heights by constraining a gravimetric geoid model […]

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