| General | |
| GLOSS number | 223 |
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| Station name | St John's, Newfoundland |
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| Country | Canada |
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| Time zone | 052.5W, GMT - 3.5hrs |
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| Latitude (+ve N) | 47.56666 |
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| Longitude (+ve E) | -52.71666 |
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| Ocean | Atlantic |
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| Observation period(s) | 1925, 1935- |
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| Responsible country | Canada |
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Authority responsible
for tide gauge | Dept. of Fisheries and Oceans, CHS Maritimes, Bedford Institute of Oceanography, P.O. Box 1006, Dartmouth, NS, B2Y 4A2, Canada |
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| GLOSS contact | Canada |
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| Committed to GLOSS | Yes |
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| Operational | Yes |
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| Location map |  |
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| Instrumentation | |
| Float | Yes |
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| Pressure | No |
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| Bubbler | Yes |
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| Acoustic | No |
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| Radar | No |
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| Data | |
| Digital data | Yes |
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| Data acquisition rate | Continuous graph and 15 minute intervals, sampled hourly. |
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| Fast delivery data at UHSLC |   |
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| High frequency data at BODC |  |
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| High frequency data at UHSLC | |
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| Real-time data available | Yes |
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| Benchmarks | |
| Tide gauge benchmarks | 90F9000 A CHS tablet set vertically in the base of a concrete colonnade at the NE corner of the building of the Harvey Oil office. The building has a brick north face. The tablet is set into the top of the base 0.3m above the asphalt drive. |
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| Benchmark relationships | 1957 BM75K elevation 7.276m above Chart Datum (also see below)
1958-1959 BM HS elevation 7.276m above Chart Datum
1960-1979 BM77K elevation 3.602m above Chart Datum
1980-1987 BM77K elevation 3.602m above Chart Datum
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| Auxiliary benchmarks | 77K A GSC tablet set horizontally in the Canadian National Railway Station west wall, 1m north of the main entrance and 0.9m below a window.
87F9000 A CHS tablet set horizontally in the NE corner pillar of the auxiliary electrical building of the MOT complex.
Tablet 0.58m above concrete base & 0.18m west of the corner of the bldg. Elevation is 3.562m above Chart Datum.
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| Data at PSMSL | |
| Annual MSL (RLR) data | |
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| Annual MSL (RLR) plot |  |
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| MSL method | Mean of hourly heights |
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| PSMSL code | 970/121 |
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| Other relevant codes | UHSLC 276 |
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| Additional information | |
| Other relevant information | 1925-1937 Admiralty BM elevation 30.48m (Admiralty assumed datum)
** 1955-1956 BM76K elevation 7.154m above Chart Datum ** review pending
Auxiliary Benchmarks continued:
87F9001 A CHS tablet set vertically in a concrete guard post located on the west side of the 3rd loading door on the north side of the main depot bldg.Data available at http://www.waterlevels.gc.ca, http://www.meds-sdmm.dfo-mpo.gc.ca/meds/Databases/TWL/TWL_inventory_e.htm and http://www.meds-sdmm.dfo-mpo.gc.ca/meds/prog_nat/benchmark/public/default_e.as |
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| Nearest Met. station | St. John's Weather Service |
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| Last updated | 1997-11-10 |
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