OSNI Open Data: River Basin LIDAR 2004 - DTMs and DSMs

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly spaced points of known height which, when used with other digital data such as maps or orthophotographs, can provide a 3D image of the land surface. This data is typically provided in tiles of 1km x 1km, each containing elevations in a 1m x 1m grid. Tiles are grouped and can be downloaded by area as shown on the index ‘River Basin LIDAR-Coverage Map’. Data acquired in 2009 & 2010 also contains Point Cloud files, a closely spaced (0.2m) irregular grid of elevations from which the 1m x1m grids were derived. By download or use of this dataset you agree to abide by the Open Government Data Licence.

This data is not a supported LPS product, supporting documentation has been provided to assist / offer guidance on the data itself.

Data and Resources

Castlederg_23_05_2004ZIP

Castlederg DTM and DSM Data in ASCII format
Foyle_23_05_2004ZIP

Foyle DTM and DSM data in ASCII format
Limavady_23_05_2004ZIP

Limavady DTM and DSM data in ASCII format
Newtownstewart_23_05_2004ZIP

Newtownstewart DTM and DSM data in ASCII format
Omagh_23_05_2004ZIP

Omagh DTM and DSM data in ASCII format
Strabane_23_05_2004ZIP

Strabane DTM and DSM data in ASCII format
River Basin Lidar - Note on the DatasetPDF

Some background information on the underlying lidar data including its...
River Basin Lidar Coverage MapPDF

Map showing location and extent of captured river basin lidar in Northern...
River Basin Lidar Coverage and 1km reference grid mapPDF

Map showing location and extent of captured river basin lidar in Northern...

Additional Info

Field	Value
Last Updated	April 25, 2016, 06:47 (UTC)
Created	April 25, 2016, 06:47 (UTC)
Theme	Mapping