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

OSNI Open Data provides a Digital Terrain Model (DTM) consisting of a grid of regularly spaced points of known height. The dataset covers sheet numbers 201-250 at a 10-meter resolution and is published by the Government Digital Service under the OGL-UK-3.0 license. The description notes this is a large dataset that may take time to download.

Use Cases

• Generate 3D visualizations of the land surface based on the described grid of height points.
• Perform terrain analysis for hydrological or environmental modeling using the DTM data.
• Create composite landscape models by integrating this DTM with other geospatial data like orthophotographs.

Strengths

• Data is provided at a 10-meter resolution, indicating a specific level of detail.
• Covers a defined set of 50 map sheets (201-250), providing clear spatial scope.
• Published under an open government license (OGL-UK-3.0) for reuse.

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.

Time Range

null

Freshness

Last updated: unknown

Geography

Northern Ireland (based on OSNI - Ordnance Survey Northern Ireland)