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Does anyone know if Australian topo map GeoTIFFs are made available anywhere (preferably for free)?

LINZ makes them available in New Zealand - http://www.linz.govt.nz/topography/topo-maps/index.aspx, and I was hoping a similar service was available for Australia.

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MapConnect has 1:250k data for download in many formats, including as ECW rasters which can be converted to GeoTiff with GDAL if needed. They also have a partial coverage of 1:50k topographic maps, but they cost money.

If you're interested in creating your own topographic maps, check out TopOSM, which aims to produce high-quality topographic maps from open data, and includes the source code to do so if you're willing to get your hands dirty. You might also find some hints in this quesion.

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Have you tried SRTM3 data for Australia? Roughly 90m resolution. Would need to convert though. http://dds.cr.usgs.gov/srtm/version2_1/SRTM3/Australia/

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  • From what I've seen from online screenshots it looks like hgt files will be a little raw for my requirements. I'm looking more for the type of imagery used by topomap.co.nz - but thanks for the suggestion. – Gavin Apr 14 '11 at 6:28
  • SRTM3 data is probably comparable or better then the example. You should give it a try. You can easily convert the files in any GIS software. I believe you can actually view the data in ArcGIS without any conversion. You will need to generate a shaded relief from the dem which is also a fairly simple task. It is likely that any data at this scale will be generated from the SRTM3 files. – Jakub Sisak GeoGraphics Apr 14 '11 at 17:02
  • Remember that with the HGT file you have to get the geocoding from the file name, i.e. in SRTM filename the coordinates are the center of the respective lower left pixel. – markusN Apr 16 '11 at 13:28
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Geoscience Australia have the 250K raster topo on DVD for A$99. Check out this URL: https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=65047

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  • Not too expensive in the scheme of things - I wonder if I could get some sample rasters first to check out quality first. Thanks for the recommendation! – Gavin Apr 14 '11 at 6:19
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Geoscience Australia (GA) now offers a bunch of coverages via Web Coverage Service, which you can probably plug straight into your GIS software or query directly yourself.

The topo data is here: http://www.ga.gov.au/gis/services/marine_coastal/Australian_Bathymetry_Topography/MapServer/WCSServer?request=GetCapabilities&service=WCS

and the list of all the webservices available is here: http://www.ga.gov.au/data-pubs/web-services/ga-web-services

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