OSNI Open Data - Coverage Grid - 10K: National Grid Reference System for Northern Ireland

Northern Ireland's National Grid Reference System, composed of 292 sheets and 1058 tiles, provides the naming convention for 1:10,000 scale mapping. Each tile covers an area of 4.8 km by 3.2 km and is referenced to the Irish Grid. The grid is published as open data by the Government Digital Service under the Open Government Licence.

Use Cases

• Align and download Digital Terrain Models (DTM) based on the standardized 10K grid tiles.
• Reference and download Mid Scale Raster maps using the provided grid naming convention.
• Create webmaps or desktop GIS projects by using the grid's Esri Rest API endpoint.
• Perform spatial analysis for Northern Ireland using a consistent 4.8 km x 3.2 km tile system.

Strengths

• Provides a standardized reference system of 1058 tiles covering all of Northern Ireland.
• Each tile has a defined spatial extent of 4.8 km by 3.2 km, enabling consistent data partitioning.
• Available in multiple interoperable geospatial formats, including GeoJSON, ESRI Shapefile, and KML.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• Row count is unknown, which may limit suitability assessment for large-scale automated processing.

Provenance

Source

Government Digital Service

Collection Method

null

Time Range

null

Freshness

null

Geography

Northern Ireland