Australian Water Information Dictionary


Geocentric Datum of Australia 2020

A geocentric (earth-centred) coordinate reference system that is Australia’s official national datum (since December 2017). It is a plate-fixed datum that is aligned with the 2014 realisation of the International Terrestrial Reference Frame 2014.

GDA2020 coordinates differ from GDA94 coordinates by approximately 1.5 to 1.8 metres.

For more information on GDA94 and GDA2020 see Intergovernmental Committee on Surveying and Mapping

This definition applies to: