Data and Station Information for DEN HELDER

Station Information

Station ID:	23
Latitude:	52.964444
Longitude:	4.745
Coastline code:	150
Station code:	31
Country:	NETHERLANDS
Time span of data:	1865 – 2018
Completeness (%):	100
Date of last update:	09 Jul 2019

Green Arrow:	Current Station
Yellow Marker:	Neighbouring RLR Station
Red Marker:	Neighbouring Metric Station

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.

Tide Gauge Data

Plot of monthly mean sea level data at DEN HELDER.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at DEN HELDER.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution. NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Station Documentation

Link to RLR information.

Documentation - date unknown

ALL DUTCH METRIC DATA ARE MEASURED TO NAP (NORMAAL AMSTERDAMSCH PEIL)
PRIOR TO 1936 VALUES BASED ON HIGH AND LOW WATERS OR ON 4 OR 8 READINGS/DAY

Documentation added 2011-02-08

After receiving levelling data for NAP up to 2005 and the value of NAP after re-levelling in 2005 the station was made RLR. RLR factor up to 2005 6.929m and for 2005 onwards 6.946m.

Documentation added 2016-01-22

The note above stating that periods of the data are MTL is misleading. Sections of the original data were MTL. However, Pub. Sci. 5 states “For these periods a shallow water correction has been added to the mean heights of high and low water in order to give a mean height of sea-level comparable with those otherwise calculated for other periods.” Thus, a correction to MSL has already been applied.

Data Authority

Servicedesk Data
Rijkswaterstaat
Postbus 556
3000 AN Rotterdam

Data

Data Notes

Extracted from Database

DEN HELDER