National Geodetic Vertical Datum of 1929 information
Vertical datum in the United States
Geodesy
Fundamentals
Geodesy
Geodynamics
Geomatics
History
Concepts
Geographical distance
Geoid
Figure of the Earth (radius and circumference)
Geodetic coordinates
Geodetic datum
Geodesic
Horizontal position representation
Latitude / Longitude
Map projection
Reference ellipsoid
Satellite geodesy
Spatial reference system
Spatial relations
Vertical positions
Technologies
Global Nav. Sat. Systems (GNSSs)
Global Pos. System (GPS)
GLONASS (Russia)
BeiDou (BDS) (China)
Galileo (Europe)
NAVIC (India)
Quasi-Zenith Sat. Sys. (QZSS) (Japan)
Discrete Global Grid and Geocoding
Standards (history)
NGVD 29
Sea Level Datum 1929
OSGB36
Ordnance Survey Great Britain 1936
SK-42
Systema Koordinat 1942 goda
ED50
European Datum 1950
SAD69
South American Datum 1969
GRS 80
Geodetic Reference System 1980
ISO 6709
Geographic point coord. 1983
NAD 83
North American Datum 1983
WGS 84
World Geodetic System 1984
NAVD 88
N. American Vertical Datum 1988
ETRS89
European Terrestrial Ref. Sys. 1989
GCJ-02
Chinese obfuscated datum 2002
Geo URI
Internet link to a point 2010
International Terrestrial Reference System
Spatial Reference System Identifier (SRID)
Universal Transverse Mercator (UTM)
v
t
e
Illustration of vertical datums in the United States.
The National Geodetic Vertical Datum of 1929 is the official name since 1973[1] of the vertical datum established for vertical control surveying in the United States of America by the General Adjustment of 1929. Originally known as Sea Level Datum of 1929, NGVD 29 was determined and published by the United States Coast and Geodetic Survey[2] and used to measure the elevation of a point above and depression below mean sea level (MSL).
NGVD29 was superseded by the North American Vertical Datum of 1988 (NAVD 88),[3] based upon reference to a single benchmark (referenced to the new International Great Lakes Datum of 1985 local mean sea level height value), although many cities and U.S. Army Corps of Engineers "legacy" projects with established data continued to use the older datum.[4]
^US Department of Commerce, National Oceanic and Atmospheric Administration. "National Geodetic Vertical Datum of 1929 (NGVD 29) - Vertical Datum - Datums - National Geodetic Survey". www.ngs.noaa.gov. Retrieved 2022-02-01.
^.esri.com GIS Dictionary: National Geodetic Vertical Datum of 1929 Accessed November 18, 2023
^US Department of Commerce, National Oceanic and Atmospheric Administration. "North American Vertical Datum of 1988 (NAVD 88) - Vertical Datum - Datums - National Geodetic Survey". www.ngs.noaa.gov. Retrieved 2022-02-01.
^"Standards and Procedures for Referencing Project Elevation Grades to Nationwide Vertical Datums" (PDF).
and 28 Related for: National Geodetic Vertical Datum of 1929 information
The NationalGeodeticVerticalDatumof1929 is the official name since 1973 of the verticaldatum established for vertical control surveying in the United...
A geodeticdatum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame) is a global datum reference...
American Datum (NAD) is the horizontal datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodeticdatum, and also describes the associated Earth Gravitational Model (EGM) and...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
include an adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
Vertical Datumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). NationalGeodetic Survey "Truchas Peak". NGS Data Sheet. National Geodetic...
hundreds of meters due to regional deviations in the direction of the plumbline (vertical). These regional geodeticdatums, such as ED 50 (European Datum 1950)...
converted from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). NationalGeodetic Survey Wikimedia...
Geopotential Datumof 2022 (NAPGD2022) is a new geodeticdatum set to be produced by the U.S. NationalGeodetic Survey in 2024–2025 to improve the National Spatial...
in the 48 states of the contiguous United States include an elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North...
continental drift. The development of ETRS89 is related to the global ITRS geodeticdatum, in which the representation of the continental drift is balanced...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
from the National GeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). NationalGeodetic Survey Archived 2011-10-19...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
in the 48 states of the contiguous United States include an elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
height between the North American VerticalDatumof 1988 (NAVD 88) and the NationalGeodeticVerticalDatumof1929 (NGVD 29) for a location in the contiguous...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
elevation adjustment from the NationalGeodeticVerticalDatumof1929 (NGVD 29) to the North American VerticalDatumof 1988 (NAVD 88). For further information...
Global Information
