Portrush tide gauge site
The tide gauge equipment is situated in Portrush lifeboat station and the pressure points are mounted close to the end of the lifeboat slipway.
The tide gauge is leveled to the tide gauge bench mark supported by Ordnance Survey of Northern Ireland auxiliary marks.
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Tide gauge location
The equipment is housed in a heated instrument cabinet within the lifeboat station, with the full-tide pressure point mounted on steel work attached to a concrete leg of the slipway, and the mid-tide pressure point being mounted on the sea wall directly below the lifeboat station.
All three pressure lines are monitored by the POL data logger.
Sea level pressures and/or elevations from this site, levelled to the National Geodetic Network, are supplied to the following authority.
- Portrush Lifeboat Station
1993 – Aanderaa Tide Gauge installed
1995 – DATARING system installed with two full-tide and a mid-tide bubblers
1995 – Aanderaa Tide Gauge removed
2001 – POL data logger installed
|Grid ref||C 850407 (OSNI)|
|H for 2023||2.60 m|
|L for 2023||0.08 m|
|H for 2024||2.63 m|
|L for 2024||0.04 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