Otway Basin

There are 5 release areas in the Otway Basin.

Maps and shapefiles

Maps show the release areas in bathymetric detail. They also include other permit locations, known petroleum accumulations and wells. Shapefiles show the areas in vector format for geographic information system (GIS) software. Field outlines are from GPinfo, a Petrosys Pty Ltd product. They are accurate as at 1 December 2025.

View the release areas on the National Offshore Petroleum Titles Administrator’s (NOPTA) interactive map.

View the high-resolution release area map of offshore Victoria and Tasmania areas in the Nelson Sub-basin [9.61MB JPG] and Shipwreck Trough [7.57MB JPG].

View the map legend [997KB JPG].

Download shapefiles of all acreage release areas [22.8KB ZIP].

Block diagrams

Block diagrams show the coordinates of release area boundaries.

View the block diagrams for offshore Victoria [748KB JPG].

View the block diagrams for offshore Tasmania [864KB JPG].

Block listings

Block listings provide graticular block numbers and 1:1,000,000 map sheet references that identify each release area.

See all block listings for this basin [166KB PDF] [54.6KB DOCX].

About these files

If you experience any difficulty accessing this information, please email petroleum.exploration@industry.gov.au.

Geological information

Geoscience Australia partnered with us to provide geological information for this release: