Ilfracombe tide gauge site

The tide gauge building is located in the corner of the harbour car park. The pressure points are fixed on the seaward end of the low jetty.
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Tide gauge location

The tide gauge building contains the pneumatic control panel and POL data logging equipment.

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

External users

  • Environment Agency, South West Region
  • Environment Agency, Southern Region
  • Environment Agency, Midlands Region
  • Environment Agency Wales / Asiantaeth yr Amgylchedd Cymru

Site history

1968 – Lea gauge installed
1973 – Ott punch tape recorder installed, Lea gauge removed
1983 – Ott recorder removed
1983 – DATARING system installed with full tide pressure point and Wellhead unit
1991 – Building removed after storm damage to the pier
1991 – Building and DATARING system reinstalled
1992 – Mid-tide pressure point installed
2000 – Tide gauge building removed for the demolition of the pier
2000 – Temporary tide gauge established in a cabinet on the harbour car park
2002 – Tide gauge system relocated to the new tide gauge building – two full-tide and mid-tide pressure points were fixed to the low jetty wall

Latitude51° 12.668'N
Longitude4° 6.743'W
Grid refSS 5255 4789
Earliest data1968
Tidal levels
HAT10.26 m
LAT-0.09 m
MHWS9.27 m
MHWN6.99 m
MLWN3.11 m
MLWS0.86 m
H for 2024 10.17 m
L for 2024 -0.07 m
H for 2025 10.01 m
L for 2025 0.06 m
MSR8.41 m
MNR3.88 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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