National Base Map: Greyscale Topographic Imagery for Australia and External Territories

A seamless greyscale topographic mapping service covering all of Australia and its external territories. The service is produced for the National Map project, combining Geoscience Australia data at smaller scales with OpenStreetMap data at larger scales. It was last updated on 2026-05-19.

Use Cases

• Create basemaps for thematic overlays based on the seamless greyscale topographic data.
• Perform spatial analysis at varying scales based on the layer scale dependencies.
• Develop web mapping applications using the provided WMTS service for Australia and its external territories.

Strengths

• Covers the entire landmass of Australia, including Cocos (Keeling) Islands, Christmas Island, Norfolk Island, and Lord Howe Island.
• Integrates data from two authoritative sources: Geoscience Australia and OpenStreetMap.
• Service was updated on 2026-05-19, suggesting recent maintenance.

Limitations

• Description metadata is limited; actual data quality and resolution require manual inspection after access.
• The specific data schema, column definitions, and row counts are unknown.
• Data may reflect the geographic and source bias inherent to the contributing platforms.

Provenance

Source

Geoscience Australia Data and OpenStreetMap.

Collection Method

Produced as a service for the National Map project, integrating multiple data sources.

Freshness

Last updated 2026-05-19 22:28:59.184954; freshness should be verified.

Geography

Australia, Cocos (Keeling) Islands, Christmas Island, Norfolk Island, Lord Howe Island.