Whitby tide gauge site
The tide gauge is located in the Harbour Master's Office, Pier Road. The pressure points are positioned underneath the Quay
adjacent to the Harbour Office.
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Tide gauge location
The tide gauge consists of a pneumatic bubbler system supplying two-full tide and one mid-tide pressure points. These are mounted on steelwork attached to one of the quay legs. All three pressure lines are monitored by the POL datalogger.
The tide gauge is levelled to the tide gauge bench mark supported by Ordnance Survey auxiliary marks.
External users
Sea level pressures and/or elevations from this site are supplied to the following authorities:
- Environment Agency, North East Region
- Whitby Harbour
Site history
1980 – Installed Aanderaa recorder attached to a pneumatic bubbler
1989 – DATARING system installed with full-tide pressure points; the Aanderaa recorder was removed
1995 – New steel work with two full-tide and mid-tide measuring systems installed
2002 – POL data logger installed
| Location | |
| Latitude | 54° 29.4'N |
| Longitude | 0° 36.862'W |
| Grid ref | NZ 8986 1140 |
| Earliest data | 1980 |
| Tidal levels | |
| HAT | 6.21 m |
| LAT | 0.22 m |
| MHWS | 5.59 m |
| MHWN | 4.50 m |
| MLWN | 2.25 m |
| MLWS | 0.99 m |
| H for 2024 | 6.20 m |
| L for 2024 | 0.22 m |
| H for 2025 | 6.09 m |
| L for 2025 | 0.32 m |
| MSR | 4.6 m |
| MNR | 2.25 m |
Abbreviations
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 devices
Tide gauge systemsFull-tide bubbler
Half-tide bubbler
Direct pressure transducer
Tide gauges
Ott pneumatic gauge
Munro float gauge
Wellhead float gauge
Lea float gauge
Instruments
DATARING logger
Datum probe