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OSNI Open Data - BenchMarks - Height

Published by:
OpenDataNI
Last updated:
11 November 2025
Topic:
Not added
Licence:
Open Government Licence

Summary

OSNI Benchmark data consists of point data giving the location of the points, along with the associated text which shows the height value. Bench marks are shown in metres above mean sea level. This data is not maintained. It is recommended to use a Global Navigation Satellite System (GNSS) and the latest geoid model to find orthometric height in Northern Ireland.

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Link to the data Format File added Data preview
GeoJSON GEOJSON 24 October 2025 Not available
KML KML 24 October 2025 Not available
Shapefile ZIP 24 October 2025 Not available
CSV CSV 24 October 2025 Preview

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