NSW Survey Marks GDA94: Geodetic Control Points

New South Wales, Australia, maintains a network of permanent survey marks that form the official state control survey. This dataset provides GDA94 coordinates, heights, and related information for these marks, sourced from the authoritative Survey Control Information Management System (SCIMS). The data is now deprecated and superseded by newer GDA2020 and multiCRS services, as GDA94 coordinates are no longer maintained.

Use Cases

• Historical cadastral survey validation using deprecated GDA94 coordinate references.
• Assessing spatial data alignment issues in GDA2020 mapping environments.
• Referencing legacy survey mark locations and heights for archival or comparison purposes.

Strengths

• Serves as the single source of truth for the NSW state control survey network, sourced directly from SCIMS.
• Cross-platform presence on data.gov.au indicates its established role in official spatial data infrastructure.
• Provides controlled precision for numerical output, mirroring the official SCIMS Online portal.

Limitations

• Dataset is explicitly deprecated and retired; GDA94 coordinates are no longer maintained.
• Spatial reference (WGS 84 ≈ GDA94) may cause misalignments in modern GDA2020 GIS environments.
• Key metadata such as row count, specific columns, license, and author are not provided in the sources.

Provenance

Source

Spatial Services (DCS), NSW Government, via the Survey Control Information Management System (SCIMS).

Collection Method

Dynamically fed to the web service from the central SCIMS database under the NSW Foundation Spatial Data Framework.

Freshness

Last updated dates are in May 2026, but the data itself is deprecated and superseded.

Geography

New South Wales, Australia.