NGS_Description 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 …

Jun 10, 2025 · The NOAA Continuously Operating Reference Station (CORS) Network (NCN), managed by NOAA/National Geodetic Survey, provide Global Navigation Satellite System (GNSS) data, …

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

Jun 16, 2025 · NGS Coordinate Conversion and Transformation Tool (NCAT) allows users to easily convert between different coordinate systems and/or transform between different reference frames …

The imagery posted on this site was acquired by the NOAA Remote Sensing Division to support NOAA homeland security and emergency response requirements. In addition, it will be used for ongoing …

Web Services Explore our publicly available Web services that provides users access to NGS APIs. The results of all NGS web services are in JSON format.

Nov 17, 2025 · Access shared solutions for the Online Positioning User Service (OPUS) to process GNSS data and compute accurate geodetic positions.

The actual transformation tool is NGS’s Coordinate Conversion and Transformation Tool (NCAT), in which VERTCON 3.0 release 20190601 is but one part. VERTCON 3.0 release 20190601 adds …

Mar 4, 2026 · OPUS Projects provides simple management and processing tools for your survey projects involving multiple sites and multiple occupations. Advantages include: Customizable data …

Jun 16, 2025 · SPCS2022 is the third generation of the State Plane Coordinate System. The first version was created in the 1930s (SPCS 27) and the second in the 1980s (SPCS 83) as part of providing …