The Bureau of Meteorology National Tidal Centre (NTC) maintains a network of tide gauge stations designed to monitor sea level and climate around the Australian coast, to identify long period sea level change. This network is referred to as the Australian Baseline Sea Level Monitoring Project (ABSLMP).

Intergovernmental Committee on Surveying and Mapping (ICSM) jurisdictions periodically monitor these gauges to determine any possible local movement of the installation and to link them to a common vertical reference. This is done by optical levelling between a nearby array of benchmarks (coastal array GIF-image 4k) and the ABSLMP tide gauge installations.

Previously, repeat GPS epoch campaigns and optical levelling between coastal and inland benchmark arrays were used to determine vertical land motion at the tide gauge sites (see Summary [PDF_63k]), but this has been discontinued in favour of GPS occupation at the coastal array. National Mapping and NTC are examining the possibility of installing permanent GPS reference stations near some ABSLMP sites.

Names on this Tide Gauge Site go to a summary of past optical levelling observations. All links are PDF files, average size of each is 110k. (Diagram courtesy of NTC).

Broome | Burnie | Cape Ferguson | Cocos Island | Darwin | Esperance | Groote Eylandt | Hillarys | Lorne | Portland | Port Kembla | Port Stanvac | Rosslyn Bay | Spring Bay | Stony Point | Thevenard