Height benchmarks (HFP)Höhenfestpunkte (HFP)

Höhenfestpunkte (HFP)Height benchmarks (HFP)

APIExecutable4/7Query nowOpen workbench Subscribe🇩🇪Germany

WMS service providing the location and elevation of official height reference points (Höhenfestpunkte) within the municipal area of Aachen, Germany. It reflects the integrated geodetic spatial reference system 2016 (integrierter Raumbezug 2016), introduced by the German federal states on 1 December 2016 to unify and update national height and coordinate reference frameworks. The dataset is published by the City of Aachen and supports surveying, engineering, and construction work requiring precise, standardized elevation reference data across the city.The dataset is provided as an open, freely accessible web map service without authentication.Lage und Höhe der Höhenanschlusspunkte im Bereich des Stadtgebietes Aachen. Zum 01.12.2016 haben die Länder der Bundesrepublik Deutschland eine neue Realisierung des amtlichen geodätischen Raumbezugs eingeführt, den sogenannten integrierten Raumbezug 2016. Damit werden nun einheitliche und hochge...

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Data schema (13 fields)

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Field	Type	Description
ogc_fidOgc fid	int	Internal feature identifier for the geographic record.Internal feature identifier for the geographic record.
wkb_geometryWkb geometry	geometry	Geometric position of the height reference point.Geometric position of the height reference point.
nb	int	Reference number of the map sheet or numbering block.Reference number of the map sheet or numbering block.
pktnr	int	Point number identifying the height reference point.Point number identifying the height reference point.
nhn_170Nhn 170	double	Height above sea level in the current (2017) reference system, in meters.Height above sea level in the current (2017) reference system, in meters.
nhn_160Nhn 160	string	Height difference or value from the previous (1960) height reference system.Height difference or value from the previous (1960) height reference system.
messung	int	Date (year and month) when the point was surveyed.Date (year and month) when the point was surveyed.
berechnung	int	Year in which the height value was calculated.Year in which the height value was calculated.
o	double	Easting coordinate of the point in the geodetic reference system.Easting coordinate of the point in the geodetic reference system.
n	double	Northing coordinate of the point in the geodetic reference system.Northing coordinate of the point in the geodetic reference system.
ordnung	int	Order (accuracy class) of the height reference point.Order (accuracy class) of the height reference point.
vat	string	Reference to the associated survey area or block designation.Reference to the associated survey area or block designation.
stelle	string	Responsible office or department code for the point.Responsible office or department code for the point.

Schema captured from wfs 28 days ago.

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Sample data (3 records)

Record 1n: 5631865.334 · o: 32288474.067

{
  "n": 5631865.334,
  "o": 32288474.067,
  "nb": 5101,
  "vat": "221 (MB)",
  "pktnr": 301,
  "stelle": "FB62",
  "messung": 201711,
  "nhn_160": "0.018",
  "nhn_170": 205.335,
  "ogc_fid": 1,
  "ordnung": 3,
  "berechnung": 2018
}

Record 2n: 5631893.316 · o: 32288207.992

{
  "n": 5631893.316,
  "o": 32288207.992,
  "nb": 5101,
  "vat": "221 (MB)",
  "pktnr": 61150,
  "stelle": "FB62",
  "messung": 201306,
  "nhn_160": "0.018",
  "nhn_170": 203.245,
  "ogc_fid": 2,
  "ordnung": 4,
  "berechnung": 2018
}

Record 3n: 5632051.964 · o: 32287311.384

{
  "n": 5632051.964,
  "o": 32287311.384,
  "nb": 5101,
  "vat": "221 (MB)",
  "pktnr": 61154,
  "stelle": "FB62",
  "messung": 201306,
  "nhn_160": "0.018",
  "nhn_170": 167.499,
  "ogc_fid": 3,
  "ordnung": 4,
  "berechnung": 2018
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Query examples

curl -s 'https://geoserver.aachen.de/opendata/hfp/wfs?service=WFS&version=2.0.0&request=GetCapabilities' -H 'Accept: application/json'

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No license declared upstream.

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