Harwich tide gauge site

The tide gauge housing is located on the Harwich Haven Authority jetty.
Click here to see a map of the site in a separate window.

Tide gauge location

The GRP cabinet houses the tide gauge equipment which consists of a POL data logger and a three-channel bubbler system. The pressure points are fixed to a pile beneath the cabinet.

The tide gauge is levelled to the tide gauge bench mark supported by Ordnance Survey auxiliary marks.

External users

There are currently no external users.

Site history

2004 – Tide gauge station established

Latitude51° 56.88'N
Longitude1° 17.526'E
Grid refTM 2634 3284
Earliest data2004
Tidal levels
HAT4.60 m
LAT-0.11 m
MHWS4.15 m
MHWN3.34 m
MLWN1.12 m
MLWS0.45 m
H for 2024 4.51 m
L for 2024 -0.10 m
H for 2025 4.43 m
L for 2025 -0.06 m
MSR3.7 m
MNR2.22 m

HAT – highest astronomical tide
LAT – lowest astronomical tide
MHWS – mean high water springs
MHWN – mean high water neaps
MLWN – mean low water neaps
MLWS – mean low water springs
H – highest for year
L – lowest for year
MSR – mean spring range
MNR – mean neap range

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