Normaal Amsterdams Peil (NAP) Print E-mail
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Normaal Amsterdams Peil (NAP) - The Amsterdam Ordnance Datum is a vertical reference point in use in large parts of Western Europe. Originally  created in 1684 for use in The Netherlands, the zero level of NAP was the average summer flood water level in the IJ in the centre of Amsterdam, which at that times was still connected with the open sea.

Currently the NAP is visualized by a brass bench mark in the main hall of the Amsterdam town hall. NAP is close to the sea level at the Dutch coast and Amsterdam lies only 1.42 m higher up. This in contrary to most of the Netherlands. 

Address: Town hall/music theatre, Amstel 1/ Waterlooplein


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