Portsmouth tide gauge site
The brick tide gauge building is located on Victory jetty in Portsmouth Royal Naval Base.
Click here to see a map of the site in a separate window.
Tide gauge location
The measuring system is located on the south west corner of Victory jetty. In the building there is an instrument cabinet with a pneumatic bubbler system with two full-tide and mid-tide sensors.
The tide gauge is levelled to the tide gauge bench mark supported by Ordnance Survey auxiliary marks.
Sea level pressures and/or elevations from this site are supplied to the following authority:
- Environment Agency, Southern Region
1960 – A Lea gauge was installed over the stilling well in the tide gauge building at Kings Stairs jetty
1991 – The DATARING system was installed with two full-tide bubbler systems
1999 – A new tide gauge site was established on Victory jetty; two full-tide and mid-tide bubblers were installed
2001 – POL data logger installed
|Grid ref||SU 6273 0067|
|H for 2023||5.02 m|
|L for 2023||0.30 m|
|H for 2024||5.08 m|
|L for 2024||0.20 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
Measurement devicesTide gauge systems
Direct pressure transducer
Ott pneumatic gauge
Munro float gauge
Wellhead float gauge
Lea float gauge