Relative Height: Point Features for Cliff Faces in New South Wales

Relative Height is a point feature class representing the relative heights of vertical cliff faces. The data underpins navigation, climate science, and emergency management, and was initially captured from stereoscopic aerial photography at scales of 1:25,000, 1:50,000, and 1:100,000. It is provided by Spatial Services, a business unit of the Department of Customer Service NSW, and has been updated to the GDA2020 national spatial standard.

Use Cases

• Modeling natural hazard risk for cliffs and escarpments based on relative height data.
• Supporting hydrographic and aeronautical navigation safety through accurate elevation references.
• Informing climate change adaptation and environmental water management with foundational terrain data.
• Defining maritime and administrative boundaries using precise elevation and depth information.

Strengths

• Data is aligned with the national GDA2020 spatial standard, improving accuracy and compatibility.
• Dataset accuracy is specified as within 0.5mm at map scale for 90% of well-defined features.
• Source data was captured from stereoscopic aerial photography at multiple scales (1:25k, 1:50k, 1:100k).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data currency is listed as 01/01/3000, which is likely a placeholder and requires verification.

Provenance

Source

Spatial Services (Department of Customer Service NSW)

Collection Method

Captured from stereoscopic aerial photography.

Time Range

Initial publication date is 03/02/2020.

Freshness

Last updated 2026-05-03 20:32:34.316172; freshness should be verified.

Geography

New South Wales, Australia