Data



Data Notes



Extracted from Database

20 May 2019

PORTLAND

Station Information

Station ID: 1547
Latitude: -38.343444
Longitude: 141.613167
GLOSS ID: 55
Coastline code: 680
Station code: 231
Country: AUSTRALIA
Time span of RLR data: 1992 – 2018
RLR completeness (%): 99
Time span of metric data: 1982 – 2018
Metric completeness (%): 98
Link to ellipsoid: Available
Date of last update: 23 Jan 2019

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at PORTLAND.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at PORTLAND.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: PTLD
Nearby Real Time Stations from VLIZ: porl
Fast Delivery Data from UHSLC station 129: hourly and daily
Research Quality Data from UHSLC station 129: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1995-05-02

Station density along some sections of the Australian coast has meant that station codes 601 onwards have been re-ordered compared to those in earlier versions of the PSMSL data set.

Documentation added 1996-05-09

Revised data for 1982 received from the National Tidal Centre, Bureau of Meteorology, South Australia. SEAFRAME station installed 23/07/1991

Documentation added 2000-04-10

This is a "baseline station" of the Australian National Tidal Facility.

Documentation added 2000-04-10

Portland 680/231 RLR(1995) is 9.950m below PM(390)/BM38-81

Documentation added 2010-08-26

New information from National Tidal Centre and Geoscience Australia: Australian Height Datum (AHD) is 0.507 m above tide gauge zero Primary benchmark Portland PM 116 is 8.662 m above AHD
RLR definition updated: RLR (1995) is 15.669 m below PM 116

Documentation added 2011-10-24

Using information from the National Tidal Centre, Australia the RLR diagram has been revised. Benchmark PM116 is 9.169m above TGZ. The SEAFRAME sensor recovery benchmark (SSBM) is 3.425m above TGZ. RLR factor is 6.5m.

Data Authority

National Tidal Centre
Bureau of Meteorology
PO Box 421
Kent Town 5071
South Australia

Documentation added 2010-08-12

Formerly known as the National Tidal Facility