Data and Station Information for HARWICH

Station Information

Station ID:	742
Latitude:	51.948
Longitude:	1.292139
Coastline code:	170
Station code:	73
Country:	UNITED KINGDOM
Time span of RLR data:	1960 – 1974
RLR completeness (%):	92
Time span of metric data:	1954 – 2024
Metric completeness (%):	52
Date of last update:	26 Feb 2025

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 HARWICH.

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

Plot of annual mean sea level data at HARWICH.

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.

Additional Data Sources (guide to additional data sources)

Nearby Real Time Stations from VLIZ: harw

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Harwich 170/073 RLR(1965) is 8.9m below BM TM2617 3277

Documentation added 1992-04-01

Several problems with the gauge 1975-76, no RLR values

Documentation added 1994-09-20

A Lege stilling well gauge was installed in 1953, replaced by another Lege in June 1966, and a Lege (with a Munro transmitter) at a new site in February 1975.

Documentation added 2001-01-02

Recent work on vertical land movements in the UK can be found from the University of Nottingham web site: http://ukcogr.iessg.nottingham.ac.uk/~eosi/ 1976 gauge site discountinued superceded by Felixstowe
Prior to 1962 values based on 8 readings per day

Documentation added 2014-07-03

04.12.2013 TGI were at site to carry out general maintenance.

Documentation added 2015-05-06

There were problems with channel blocking throughout the year. There were no site visits and no levelling during 2014.

Data Authority

Environment Agency
Horizon House
Deanery Road
BS1 5AH
Bristol

Data

Data Notes

Extracted from Database

HARWICH