• Thumbnail for Amsterdam Ordnance Datum
    NAP markers in Amsterdam Amsterdam Ordnance Datum or Normaal Amsterdams Peil (NAP) is a vertical datum in use in large parts of Western Europe. Originally...
    4 KB (552 words) - 09:12, 16 June 2024
  • Thumbnail for Normalhöhennull
    Normalhöhennull (category Vertical datums)
    changed its height system over to normal heights based on the datum of the Amsterdam Ordnance Datum, known as the German Mean Height Reference System, DHHN92...
    6 KB (572 words) - 00:08, 23 July 2024
  • Thumbnail for Afsluitdijk
    and a width of 90 metres (300 ft), at an initial height above Amsterdam Ordnance Datum of between 6.7 metres (22 ft) along the section at Friesland, and...
    24 KB (2,718 words) - 02:17, 18 October 2024
  • Thumbnail for Nieuwerkerk aan den IJssel
    point of the Netherlands: 6.76 m (22.2 ft) below Amsterdam Ordnance Datum (mean summer sea level in Amsterdam). It is the hometown of Miss Universe 1989, Angela...
    4 KB (314 words) - 15:47, 24 September 2024
  • Thumbnail for Vertical datum
    Normalhöhennull, preceded by Normalnull Great Britain: Ordnance Datum Newlyn Netherlands: Amsterdam Ordnance Datum, was also used by Prussia Switzerland: Metres...
    11 KB (1,471 words) - 02:22, 14 September 2024
  • Thumbnail for Waddinxveen
    marks the lowest point on the Dutch polders, 7.01 meters below Amsterdam Ordnance Datum. The first reference to the area is from 1233, when on April 20...
    7 KB (374 words) - 05:12, 1 September 2024
  • Thumbnail for Normalnull
    Normalnull (category Vertical datums)
    Normalhöhennull (NHN). In 1878 reference heights were taken from the Amsterdam Ordnance Datum and transferred to the New Berlin Observatory in order to define...
    2 KB (162 words) - 00:08, 23 July 2024
  • Thumbnail for Rotterdam
    (20 ft) below sea level, or rather below Normaal Amsterdams Peil (NAP) or 'Amsterdam Ordnance Datum'. The lowest point in the Netherlands (6.76 m (22...
    127 KB (11,911 words) - 12:58, 22 October 2024
  • Thumbnail for Sea level
    Sea level (category Vertical datums)
    short descriptions of redirect targets Amsterdam Ordnance Datum, also known as Normaal Amsterdams Peil – Vertical datum Before Present – Time scale used in...
    23 KB (4,104 words) - 03:03, 16 July 2024
  • Thumbnail for Elevation
    resolution of 1/3, 1, and 2 arcseconds. Amsterdam Ordnance Datum, a.k.a. Normaal Amsterdams Peil (NAP), Dutch vertical datum Elevation profile Geodesy GTOPO30...
    7 KB (571 words) - 19:18, 20 July 2024
  • Thumbnail for Sea level rise
    longest running sea-level measurements, NAP or Amsterdam Ordnance Datum were established in 1675, in Amsterdam. Record collection is also extensive in Australia...
    208 KB (21,931 words) - 22:17, 31 October 2024
  • Archaeology Program of Texas A&M University Amsterdam Ordnance Datum (Normaal Amsterdams Peil), a geodetic datum Auteuil-Neuilly-Passy, an area of Paris sometimes...
    3 KB (452 words) - 11:32, 4 June 2024
  • Thumbnail for Herengracht
    Herengracht (category Canals in Amsterdam)
    canals in the city center, is -0.40 metres (1 ft 4 in) from the Amsterdam Ordnance Datum. The Herengracht in The Hague is filled in. Maarssen also has a...
    9 KB (907 words) - 05:25, 1 September 2024
  • Thumbnail for Keizersgracht
    Keizersgracht (category Canals in Amsterdam)
    metres (1 ft 4 in) below the Amsterdam Ordnance Datum. If ice forms in winter, there is a possibility of skating on the Amsterdam canals. Waternet will stop...
    14 KB (1,481 words) - 05:25, 1 September 2024
  • Thumbnail for Metres above the Adriatic
    Metres above the Adriatic (category Vertical datums)
    according to the Normalhöhennull levelling system based on the Amsterdam Ordnance Datum Italy: −0.5 to −3.2 cm, orthometric height referring to Genoa Tide...
    5 KB (547 words) - 13:42, 21 October 2024
  • Thumbnail for Máxima Canal
    to 2 m above Amsterdam Ordnance Datum (Normaal Amsterdams Peil). Hintham Lock moves ships from 2 m to 4.7 m above Amsterdam Ordnance Datum. There are eight...
    5 KB (532 words) - 21:51, 5 August 2024
  • Thumbnail for Benchmark (surveying)
    Broad arrow Geoid Levelling—a surveying technique that uses benchmarks Ordnance datum Spot height "Bench marks and levelling points". Heritage and History...
    10 KB (1,053 words) - 17:50, 22 October 2024
  • Thumbnail for Berlin Observatory
    Kaiser Wilhelm I. on 22 March 1879. This point was derived from the Amsterdam Ordnance Datum and marked off 37 meters over zero. Wilhelm Foerster led the observatory...
    41 KB (4,670 words) - 06:05, 19 August 2024
  • Thumbnail for Geodesy
    vertical datums, such as the NAVD 88 (North American Vertical Datum 1988), NAP (Normaal Amsterdams Peil), the Kronstadt datum, the Trieste datum, and numerous...
    38 KB (4,285 words) - 21:16, 21 October 2024
  • Thumbnail for Stormvloedkering Hollandse IJssel
    barrier is closed at an anticipated water level of 2.25 metres above Amsterdam Ordnance Datum (NAP). Closure of the barrier takes between 20 and 60 minutes....
    16 KB (1,627 words) - 11:33, 28 December 2023
  • Thumbnail for Lage Zwaluwe-'s-Hertogenbosch railway
    the law was that the railroad would be constructed at 7 m above Amsterdam Ordnance Datum, instead of constructing the new station and the line at 9 m above...
    30 KB (3,394 words) - 08:05, 25 September 2024
  • Thumbnail for Noordhollandsch Kanaal
    It would become 110 m long, 18.20 m wide and 7.33 m deep below Amsterdam Ordnance Datum and was finished on 15 December 1864. Other recommendations of...
    41 KB (4,820 words) - 09:48, 17 October 2024
  • Thumbnail for Nieuwe Waterweg
    and it is dredged to a depth of 14.5–16 metres (48–52 ft) below Amsterdam Ordnance Datum. It is this channel, together with the dredged channels in the...
    7 KB (799 words) - 06:39, 25 July 2024
  • Thumbnail for Vaals
    Retrieved 1 December 2013. "Wat is het Normaal Amsterdams Peil (NAP)?" [What is the Amsterdam Ordnance Datum]. rijksoverheid.nl (in Dutch). Government of...
    15 KB (1,163 words) - 19:41, 12 October 2024
  • Thumbnail for Grevelingendam
    line') over the Plaat van Oude Tonge is 5.5 metres above Amsterdam Ordnance Datum (Normaal Amsterdams Peil, NAP). This high crest line is necessary due to...
    18 KB (1,955 words) - 00:36, 27 August 2024
  • Thumbnail for Vrouwenheide
    de Vrouweheide, built in 1858, is located at 216 meters above Amsterdam Ordnance Datum, and built on an artificial hill to catch even more wind. As such...
    4 KB (382 words) - 15:52, 30 May 2022
  • Thumbnail for Zaamslag Castle
    destroy Zaamslag village and its castle, because both were above Amsterdam Ordnance Datum. However, neglect by abandonment would have the same effect. In...
    13 KB (1,612 words) - 00:22, 3 November 2024
  • Thumbnail for Oranje Locks
    lock. This lock would be 18 m wide with a depth of 4.50 m below Amsterdam Ordnance Datum (AOD). It would have three pairs of gates facing the Zuiderzee...
    35 KB (4,707 words) - 09:18, 16 August 2024
  • Thumbnail for Willem I Lock
    Willem I Lock (category Rijksmonuments in Amsterdam)
    Willem III Lock of 110 m long, 18.20 m wide and 7.33 m deep below Amsterdam Ordnance Datum. Willem III Lock was ordered on 23 May 1861, and finished on 15...
    18 KB (2,211 words) - 09:41, 23 April 2023
  • Thumbnail for Engelen Lock
    The mitre sill of the gates on the Meuse side is 2.70 m below Amsterdam Ordnance Datum (AOD). The mitre sill on the Dieze side is 0.93 m below AOD. This...
    12 KB (1,686 words) - 05:32, 24 August 2021