National Base Map: Greyscale Topography for Australia and External Territories

Geoscience Australia provides seamless greyscale topographic mapping for the entire continent, including Cocos (Keeling) Islands, Christmas Island, Norfolk Island, and Lord Howe Island. The service combines Geoscience Australia data at smaller scales with OpenStreetMap data at larger scales. This map service is produced for the National Map project and contains layer scale dependencies.

Use Cases

• Create basemaps for thematic overlays based on the seamless greyscale topography.
• Perform spatial analysis at varying scales based on the combined Geoscience Australia and OpenStreetMap data.
• Develop location-based applications for Australian territories based on the consistent topographic service.

Strengths

• Covers the entire Australian continent and four external territories.
• Integrates data from two authoritative sources: Geoscience Australia and OpenStreetMap.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Combined from Geoscience Australia and OpenStreetMap sources.

Freshness

Last updated 2026-05-19 22:23:01.920714; freshness should be verified.

Geography

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