North American Datum of 1927

E859783
geodetic datum geodetic reference system horizontal datum

The North American Datum of 1927 is a geodetic reference system that long served as the standard coordinate framework for mapping and surveying in North America before being superseded by more modern datums.

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Observed surface forms (1)

Surface form Occurrences
North American Datum (for engineering and mapping) 1

Statements (48)

Predicate Object
instanceOf geodetic datum ⓘ
geodetic reference system ⓘ
horizontal datum ⓘ
abbreviation NAD27 NERFINISHED ⓘ
basis classical ground-based triangulation networks ⓘ
category cartography ⓘ
geodesy ⓘ
geographic information systems ⓘ
centeredOn North American continent NERFINISHED ⓘ
continentUsedIn North America NERFINISHED ⓘ
coordinateDifferencesMagnitude tens of meters ⓘ
coordinateDifferencesRelativeTo NAD83 ⓘ
coordinateSystemDimension 2D horizontal ⓘ
coordinateSystemType geodetic coordinate system ⓘ
datumType local datum ⓘ
definedBy U.S. Coast and Geodetic Survey NERFINISHED ⓘ
ellipsoid Clarke 1866 NERFINISHED ⓘ
epoch 1927 ⓘ
governingBodyForTransitionInUS National Geodetic Survey NERFINISHED ⓘ
hasManyLocalAdjustments true ⓘ
introducedInYear 1927 ⓘ
notEarthCentered true ⓘ
predecessorOf North American Datum of 1983 NERFINISHED ⓘ
realizationOf Clarke 1866 ellipsoid NERFINISHED ⓘ
referencePoint Meades Ranch triangulation station NERFINISHED ⓘ
referencePointCountry United States NERFINISHED ⓘ
referencePointLocation Kansas NERFINISHED ⓘ
replacedInUSBy NAD83 NERFINISHED ⓘ
status obsolete for most official uses ⓘ
stillUsedFor historical GIS datasets ⓘ
legacy mapping data ⓘ
supersededBy NAD83 ⓘ
North American Datum of 1983 NERFINISHED ⓘ
timePeriodOfPrimaryUse 20th century ⓘ
usedFor cadastral surveys ⓘ
engineering surveys ⓘ
land surveying ⓘ
mapping ⓘ
topographic mapping ⓘ
usedInCountry Canada ⓘ
Caribbean countries ⓘ
Central American countries ⓘ
Greenland NERFINISHED ⓘ
Mexico ⓘ
United States of America ⓘ
surface form: United States
usedWithMapProjections Albers Equal-Area Conic NERFINISHED ⓘ
Lambert Conformal Conic NERFINISHED ⓘ
Transverse Mercator NERFINISHED ⓘ

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

North American Datum of 1983 → replaced → North American Datum of 1927 ⓘ
California State Route 1 (within district boundaries) → coordinateSystem → North American Datum of 1927 ⓘ
this entity surface form: North American Datum (for engineering and mapping)