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

Australia and its external territories of Cocos (Keeling) Islands, Christmas Island, Norfolk Island, and Lord Howe Island are covered by this seamless greyscale topographic mapping service. 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 06.

Use Cases

• Create thematic web maps based on the seamless greyscale topographic basemap.
• Perform spatial analysis at varying scales based on the combined Geoscience Australia and OpenStreetMap data.
• Develop location-based services for Australia and its external territories based on the national coverage.

Strengths

• Provides seamless coverage for the entire landmass of Australia and its external territories.
• Integrates authoritative data from Geoscience Australia with community-sourced OpenStreetMap data for different scale ranges.

Limitations

• Description metadata is limited; actual data quality and layer scale dependencies require manual inspection after access.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Produced for the National Map project, combining Geoscience Australia and OpenStreetMap data sources.

Time Range

null

Freshness

Last updated 2026-05-06 08:51:57.926777; freshness should be verified.

Geography

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