| General | |
| GLOSS number | 55 |
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| Station name | Portland |
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| Country | Australia |
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| Time zone | 150E, GMT + 10hrs |
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| Latitude (+ve N) | -38.34333 |
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| Longitude (+ve E) | 141.61333 |
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| Ocean | Southern |
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| Observation period(s) | Analogue float gauge 1982-1993; Acoustic 1991- |
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| Responsible country | Australia |
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Authority responsible
for tide gauge | National Tidal Centre, Australia (see GLOSS Contact Points). |
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| GLOSS contact | Australia |
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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 | No |
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| Acoustic | Yes |
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| Radar | No |
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| Data | |
| Digital data | Yes |
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| Additional parameters | Barometric pressure, water/air temperature, wind speed and direction |
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| Data acquisition rate | 6 minute interval |
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| Real-time data available | Yes |
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| Additional parameters (real-time) | Barometric pressure, water/air temperature, wind speed and direction |
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| Benchmarks | |
| Tide gauge benchmarks | Portland (PM) 390 / BM38-81 3D Brass pin in concrete at the northern end of the K S Anderson Wharf 3D 2.943m above the Australian Height Datum and 3.450m above Chart Datum. |
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| Benchmark relationships | Zero of tide staff is 0.022m below Tide Gauge Zero (TGZ) and 0.507m below the Australian Height Datum
TGZ is 3.426m below PM386.
TGZ is 2.820m below PM298.
Chart Datum is 0.014m below TGZ and 0.507m below the Australian Height Datum (AHD).
|
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| Auxiliary benchmarks | Portland (PM) 386
Portland (PM) 387 (HSM) /1464-2H = 3.408m AHD
Portland (PM) 298
Portland (PM) 378 (HSM)
Portland (PM) 116 / GBM103 = datum for AHD heights = 8.662m AHD
Portland (PM) 393 / P203-1H = Coastal Array; Primary BM = 3.517m AHD
Portland (PM) 238
Portland (PM) 388
Portland (PM) 239
Portland (PM) 389
Portland (PM) 390
SEAFRAME Sensor BM = 2.918m AHD
|
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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 | Hourly means |
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| PSMSL code | 680/231 |
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| Other relevant codes | NTF port no. 61410 |
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| Additional information | |
| Other relevant information | PSMSL also hold data from another gauge at Portland (PSMSL Code 680/232: 1982-1990). |
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| Nearest Met. station | Adelaide Airport |
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| Last updated | 2002-10-16 |
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