MLA and MLC boundaries are updated every four years prior to the state elections. The current electoral dataset depicts the State Electoral Districts and Regions that were used in the State Election of March 2013. These districts and regions are described by technical description, and were published under the Electoral Act 1907, in the Govt Gazette on 10th October 2011. The current state electoral dataset that depicts the MLA District and the MLC Region boundaries remain the current dataset until the next state election is declared.

A tall framework or structure, the elevation of which is functional. A single point that describes a feature's location.

Official Geographic Names Gazetteer for Western Australia, containing road, topographic (place/feature), cultural, administrative boundary and points of interest names. Identifies correct spelling and position of official geographic names for Western Australia. This dataset is update on an as needed basis and is accessible publicly and via a subscription.

Crossings are structures built to facilitate the movement over, under or through another physical feature. In the Transport Theme, crossings include bridges, tunnels, fords, culverts and boardwalks.