Ullapool tide gauge site
The tide gauge building is located on the main fish quay in Ullapool harbour.
Click here to see a map of the site in a separate window.
Tide gauge location
The GRP tide gauge building contains a Munro IH40 tide gauge and a pneumatic bubbler system with full-tide and mid-tide sensors. The pressure points are located directly below the tide gauge building.
The tide gauge is levelled to the tide gauge bench mark supported by Ordnance Survey auxiliary marks.
There are currently no external users.
1976 – A Lea gauge was operational at the site
1981 – A bigger wooden tide gauge building was erected and a Munro IH40 was installed
1987 – The DATARING system was installed with a full-tide bubbler and a potentiometer attached to the Munro gauge
1993 – A new GRP building was erected at the site; a mid-tide bubbler was also installed
2003 – POL data logger installed
2005 – Pressure point buried in silt; the POL diving team installed new steelwork and lifted the pressure point clear of the mud
|Grid ref||NH 1292 9391|
|H for 2023||5.81 m|
|L for 2023||0.14 m|
|H for 2024||5.87 m|
|L for 2024||0.06 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