NOAA’s National Geodetic Survey (NGS) provides the framework for all positioning activities in the Nation. The foundational elements of latitude, longitude, elevation, and shoreline …

NGS's authoritative spatial data, models, and tools are vital for the protection and management of natural and manmade resources and support the economic prosperity and environmental …

Nov 17, 2025 · * required fields We may use your data for internal evaluations of OPUS use, accuracy, or related research.

The stations are independently owned and operated. Each agency shares their GNSS carrier phase and code range measurements and station metadata with NGS, which are analyzed …

Web service that distributes the geoid height of the NGS geoid models in a concise and portable way. The web service provides the geoid height (of a model specified by its model ID) at any …

NGS provides access to all NCN data collected since February 9, 1994 (1994:040). The data include observation, meteorological, navigation/ephemeris, station logs and NGS coordinate …

Acting NGS Director Shachak Pe'eri, along with NGS staff, presented a NOAA and NGS overview, a geodesy 101 primer, a summary of NGS field operations, and an introduction to …

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VERTCON 3.0 release 20190601 adds support for vertical datums on islands and Alaska, and the VERTCON 3.0 build software prepares NGS for the upcoming NAPGD2022 release.

Jun 16, 2025 · If you don't see your desired datum in the above list, it might be because the datum or datum realization is part of the NAD 83 (HARN) or NAD 83 (FBN) groups within CONUS. …