OSNI Open Data: Digital Terrain Model for Northern Ireland Sheets 101-150

OSNI Open Data provides a Digital Terrain Model (DTM) for Northern Ireland, consisting of a grid of regularly spaced points of known height. The dataset covers OSNI 10k sheet numbers 101-150 and is published by the Government Digital Service under an Open Government Licence. The DTM can be used with other digital data to create a 3D image of the land surface.

Use Cases

• Generate 3D visualizations of the landscape based on the grid of known height points.
• Perform terrain analysis for hydrological or geological modeling based on the DTM data.
• Support civil engineering and planning projects with accurate land surface elevation data.
• Combine with orthophotographs or maps for enhanced geospatial context and analysis.

Strengths

• Data is provided for a specific, defined geographic area (OSNI 10k sheet numbers 101-150).
• The dataset is structured as a Digital Terrain Model, a standard format for elevation data.
• Published under an Open Government Licence, facilitating reuse and distribution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

Government Digital Service

Collection Method

Likely derived from aerial or ground survey data, as is standard for DTMs.

Time Range

null

Freshness

Last updated date is unknown.

Geography

Northern Ireland (specifically OSNI 10k sheet numbers 101-150)