Data source: EPSG
Information source: NSGI: Netherlands Partnership of Kadaster, Rijkswaterstaat and Hydrographic Service, http://www.nsgi.nl/.
Revision date: 2020-08-31
Scope: Geodesy, topographic mapping.
Remarks: Orthometric heights. From 2018, use has been extended from Netherlands onshore to Netherlands onshore and offshore.
Area of use: Netherlands - onshore and offshore.
Definition: OGC Well Known Text
VERT_DATUM["Normaal Amsterdams Peil",2005, AUTHORITY["EPSG","5109"]]
Definition: OGC Well Known Text 2 (2019)
VDATUM["Normaal Amsterdams Peil", ID["EPSG",5109]]
Definition: ESRI Well Known Text
VDATUM["Normaal_Amsterdams_Peil"]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Normaal Amsterdams Peil", "scope": "Geodesy, topographic mapping.", "area": "Netherlands - onshore and offshore.", "bbox": { "south_latitude": 50.75, "west_longitude": 2.53, "north_latitude": 55.77, "east_longitude": 7.22 }, "id": { "authority": "EPSG", "code": 5109 } }