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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 information impact a wide range of important activities.

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Process GPS Data (OPUS)
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NGS Map
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Looking for Bench Marks & Datasheets
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Conversion & Transformation
(NCAT)
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NOAA CORS Network
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New Datums
Storm Imagery

Aerial imagery aids safe navigation and captures damage to coastal areas caused by a storm.

State Plane Coordinates

Large-scale conformal map projections to support surveying, engineering, and mapping activities.

Antenna Calibration

GNSS antenna calibrations for specific antenna types

Geodetic Toolkit

On-line interactive computation of geodetic values.

OPUS Projects

Processing tools for projects involving multiple sites and multiple occupations.

UFCORS

User Friendly CORS. Obtain a specific block of GNSS data, in RINEX format

GEOID Models

Models for transforming heights between ellipsoidal coordinates and physical height systems

GPS on Bench Marks

Improve the 2022 transformation tool, update Passive Control Status and automatic reprocessing in 2022

GNSS & GPS Data

Get coordinate information and the tools you need to work.

Remote Sensing

Download data and critical information into nautical charts.

Land Surveying

View guidelines and get tools to support land surveyors.

Geodesy

NGS works with global researchers advancing geodetic science.

Training & Education

Classes and educational resources on scientific topics relating to geodesy.

Datums & Transformations

NGS defines datums to align data and tools to transform coordinates.

OPUS-S 5.0

Support for multi-GNSS, enhanced CORS-selection algorithm, enhanced best 3-of-5 baselines algorithm and more…
News Bulletins

Important Updates:

NSRS Modernization Updates:

NGS Weekly

January 27, 2025

January 14, 2024

December 16, 2024