NAVD 88

E244556
geodetic datum vertical datum

NAVD 88 is the current official vertical datum used across the United States to provide a consistent reference for measuring elevations.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (2)

Label Occurrences
NAVD 88 canonical 4
NAVD88 1

Statements (49)

Predicate Object
instanceOf geodetic datum ⓘ
vertical datum ⓘ
abbreviation NAVD 88 self-link ⓘ
adoptedBy National Geodetic Survey ⓘ
National Oceanic and Atmospheric Administration ⓘ
adoptedYear 1991 ⓘ
alsoKnownAs National Geodetic Vertical Datum of 1929 ⓘ
surface form: NGVD 88
associatedWith GEOID models ⓘ
coordinateReferenceFrameRelation compatible with NAD 83 horizontal datum ⓘ
coordinateSystem National Spatial Reference System ⓘ
surface form: North American National Spatial Reference System
countryUsedIn Canada ⓘ
Mexico ⓘ
United States of America ⓘ
surface form: United States
datumType fixed-height datum ⓘ
definedBy constrained least-squares adjustment of leveling observations ⓘ
fullName North American Vertical Datum of 1988 ⓘ
heightType orthometric height ⓘ
knownIssue regional height biases ⓘ
subsidence effects on benchmarks ⓘ
tilt relative to modern geoid models ⓘ
maintainedBy National Geodetic Survey ⓘ
numberOfBenchmarksUsed over 600000 ⓘ
officiallyImplementedYear 1993 ⓘ
partOf National Spatial Reference System ⓘ
realizationMethod spirit leveling network ⓘ
referenceSurfaceType orthometric height reference ⓘ
referenceTideGauge Father Point/Rimouski tide gauge ⓘ
referenceTideGaugeLocation Rimouski, Quebec, Canada ⓘ
referenceTideGaugeType primary tidal benchmark ⓘ
referenceTo geoid ⓘ
replaced National Geodetic Vertical Datum of 1929 ⓘ
replacementPlannedBy National Geodetic Survey ⓘ
replacementReason to improve accuracy using GNSS and gravimetric geoid models ⓘ
scope Alaska ⓘ
Hawaii (limited applications) ⓘ
U.S. territories (limited applications) ⓘ
contiguous United States ⓘ
surface form: continental United States
successorPlannedName NAPGD2022 ⓘ
usedFor coastal zone management ⓘ
engineering design ⓘ
floodplain management ⓘ
hydrologic modeling ⓘ
infrastructure construction ⓘ
topographic mapping ⓘ
usedIn Federal Emergency Management Agency flood maps ⓘ
US Geological Survey topographic maps ⓘ
transportation infrastructure design standards ⓘ
willBeReplacedBy North American-Pacific Geopotential Datum of 2022 ⓘ
zeroDefinition height of primary tidal benchmark at Rimouski ⓘ

Referenced by (5)

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

National Spatial Reference System → historicalComponent → NAVD 88 ⓘ
NSRS → historicalDatum → NAVD 88 ⓘ
NAVD 88 → abbreviation → NAVD 88 self-link ⓘ
North American Vertical Datum of 1988 → abbreviation → NAVD 88 ⓘ
North American Vertical Datum of 1988 → alsoKnownAs → NAVD 88 ⓘ
this entity surface form: NAVD88