OSNI Open Data: 10-Meter Digital Terrain Model for Northern Ireland Sheets 1-50

A Digital Terrain Model (DTM) from the Ordnance Survey of Northern Ireland (OSNI) provides a grid of regularly spaced points of known height for creating 3D land surface images. This download contains data for OSNI 10k sheet numbers 1 through 50. The dataset is published by the Government Digital Service under an Open Government Licence.

Use Cases

• Generate 3D visualizations of the land surface based on the grid of height points.
• Conduct terrain analysis for hydrological modeling or flood risk assessment using the DTM.
• Support civil engineering and construction planning with accurate elevation data.
• Create enhanced base maps by integrating the DTM with other geospatial data like orthophotographs.

Strengths

• Data is provided by the authoritative national mapping agency, Ordnance Survey of Northern Ireland (OSNI).
• The DTM format is standardized for integration with other digital data like maps or orthophotographs.
• Published under the permissive Open Government Licence for reuse.

Limitations

• The specific spatial resolution (beyond '10M' scale), row count, and data volume are unknown from the metadata.
• Column-level documentation is absent; data structure and field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI) via Government Digital Service.

Collection Method

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Time Range

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Freshness

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Geography

Northern Ireland (specifically areas covered by OSNI 10k sheet numbers 1-50).