OSNI Open Data: 10-Meter Digital Terrain Model for Northern Ireland Sheets 201-250

Northern Ireland's land surface elevation data, provided as a Digital Terrain Model (DTM) with a 10-meter grid resolution. The dataset is published by the Ordnance Survey of Northern Ireland (OSNI) under an Open Government Licence. It covers a specific series of 10k map sheets numbered 201-250.

Use Cases

• Generate 3D visualizations of the landscape based on the DTM's grid of height points.
• Perform terrain analysis for hydrological modeling or flood risk assessment using the elevation data.
• Create contour maps or slope calculations for engineering and construction planning.
• Integrate the DTM with other geospatial data like orthophotographs for enhanced land surface interpretation.

Strengths

• Provides a specific, high-resolution 10-meter grid for elevation data.
• Covers a defined geographic area corresponding to 50 Ordnance Survey 10k map sheets (201-250).
• Published under a clear Open Government Licence, facilitating reuse.

Limitations

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

Provenance

Source

Ordnance Survey of Northern Ireland (OSNI)

Collection Method

Likely derived from aerial or ground survey data.

Time Range

null

Freshness

Last updated: unknown

Geography

Northern Ireland (specific area covered by sheets 201-250)