Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
ALL DUTCH METRIC DATA ARE MEASURED TO NAP (NORMAAL AMSTERDAMSCH PEIL) 1921 -1922 VALUES BASED ON 4 READINGS/DAY
Documentation added 2011-02-08
From levelling data received from Douwe Dillingh it was possible to calculate RLR using values before NAP was re-levelled in 2005. RLR factors up to 2005 6.936m 2005 onwards 6.957m.
Data Authority
Servicedesk Data Rijkswaterstaat Postbus 556 3000 AN Rotterdam