OSNI Open Data: Benchmark Heights Above Mean Sea Level for Belfast

Point data of benchmark height above Mean Sea Level for Belfast, measured in meters. The dataset is published by OpenDataNI under the Open Government Licence (OGL-UK-3.0). The data was last updated on 2026-07-08, but the Land and Property Services (LPS) no longer maintains the network, so its continued integrity cannot be guaranteed.

Use Cases

• Establishing orthometric height in Northern Ireland based on benchmark point data.
• Validating geoid models using historical benchmark height measurements.
• Conducting geospatial analysis for civil engineering or land surveying projects in Belfast.

Strengths

• Data is provided in multiple geospatial formats (CSV, GEOJSON, JSON, KML, ZIP, WMS).
• Published under the permissive OGL-UK-3.0 license for open use.
• Last update timestamp (2026-07-08 13:31:28.228622) is provided.

Limitations

• The data provider (LPS) no longer maintains the network, so data integrity is not guaranteed.
• Row count and column-level documentation are unknown, limiting suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

OpenDataNI

Collection Method

Likely collected by Land and Property Services (LPS) for surveying purposes.

Freshness

Last updated 2026-07-08 13:31:28.228622; freshness should be verified.

Geography

Belfast, Northern Ireland