Digital Topographic Data

Our topographic data is available for use in GIS applications, in the following scales which reflect their level of accuracy and best scale for use. The smaller the scale (i.e. 1:250 000 is a smaller scale than 1:100 000), the fewer features are depicted in the data and naturally they will be less spatially accurate. Geodata is vector data.

  • 1:100 000: At this scale 1cm is equal to 1km. This is the largest scale data provided and is particularly suited for land management and planning applications. Data quality and reliability varies at this scale.
  • 1:250 000: At this scale 1cm is equal to 2.5km. The data has been prepared to provide high quality base information for mapping and GIS professionals as it provides a detailed overview over a large area.
  • 1:1 million: At this scale 1cm is equal to 10km. This data covers the Australian landmass and its island territories and was created by generalising our 1:250 000 topographic data.
  • 1:2.5 million: At this scale 1cm is equal to 25km. This data is a vector representation of the 1:2.5 million scale general reference map and is suited to regional, state-wide or national applications.
  • 1:5 million: At this scale 1cm is equal to 50km. This data is a vector representation of the 1:5 million scale general reference map and is suited to larger regional, state-wide or national application.
  • 1:10 million: At this scale 1cm is equal to 100km. This data has been derived mainly from 1:250 000 topographic data and is suited to state-wide or national applications.

Topic contact: mapfeedback@ga.gov.au Last updated: June 17, 2013