Height products

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  Enhanced DTM

  OSNI®’s most accurate digital terrain model including breaklines. Available in DXF.

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  10M DTM

  OSNI®’s most popular digital terrain model, providing height data on a 10m grid. Text file format. This product has been withdrawn from sale and is now available under Open Government Licence. Please visit http://osni.spatial-ni.opendata.arcgis.com

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  50M DTM

  The OSNI® entry level digital terrain model on a 50m grid. Available in txt format. This product has been withdrawn from sale and is now available under Open Government Licence. Please visit http://osni.spatial-ni.opendata.arcgis.com/