OSNI Open Data: Digital Terrain Model for Northern Ireland Sheets 51-100

A Digital Terrain Model (DTM) from the Ordnance Survey of Northern Ireland (OSNI) covering sheet numbers 51-100. The dataset consists of a grid of regularly spaced points of known height, providing a 3D representation of the land surface. It is published by the Government Digital Service under an Open Government Licence.

Use Cases

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

Strengths

• Data is provided by the authoritative national mapping agency, Ordnance Survey of Northern Ireland (OSNI).
• The dataset is explicitly published for OpenData and available under a clear Open Government Licence.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The last update date is unknown, which may affect assessments of data freshness.
• The description notes the dataset is large and may take significant time to download.

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI)

Collection Method

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Time Range

null

Freshness

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Geography

Northern Ireland (specific sheets 51-100)