Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
vertical datum
|
| gptkbp:abbreviation |
NGVD 29
|
| gptkbp:administeredBy |
gptkb:National_Geodetic_Survey
|
| gptkbp:basedOn |
mean sea level
|
| gptkbp:category |
cartography
geodesy surveying |
| gptkbp:coordinateSystemType |
vertical datum
|
| gptkbp:establishedBy |
gptkb:United_States
|
| gptkbp:establishedIn |
1929
|
| gptkbp:fullName |
National Geodetic Vertical Datum of 1929
|
| https://www.w3.org/2000/01/rdf-schema#label |
NGVD29
|
| gptkbp:referenceSurface |
mean sea level at 26 tide gauges
|
| gptkbp:replacedBy |
gptkb:North_American_Vertical_Datum_of_1988
gptkb:Sea_Level_Datum_of_1929 gptkb:NAVD88 |
| gptkbp:usedFor |
elevation measurements
|
| gptkbp:usedIn |
gptkb:Canada
gptkb:Mexico gptkb:United_States |
| gptkbp:bfsParent |
gptkb:USGS_Sierra_City
gptkb:NAVD88 gptkb:Swatara_Creek_at_Jonestown |
| gptkbp:bfsLayer |
8
|