Digital Terrain Models (DTM)

DTM's provide a topographic model of the bare earth / underlying terrain of the earth's surface. They are usually derived from DSM's by digitally removing the cultural (man-made) and vegetation features.

The Environment Agency 25cm, 50cm, 1m and 2m
DTM LiDAR Height Data

The EA LIDAR data has an accuracy of +/-5cm to 15cm, with the spatial resolutions ranging from 25cm to 2 metres. The dataset has been developed to show a 'bare earth' Digital Terrain Models (DTM). This data can be used in a range of GIS and CAD formats. The elevation data produced is suitable for a range of environmental applications, including flood risk assessment.

Download sample data

Environment Agency DTM 1m ASCII Sample

NEXTMAP 5m DTM RADAR Height Data

Within the NEXTMAP height data elevation points are provided every five meters. For the DTM, the ground surface objects have been processed and removed to give a representation of the bare earth at an accuracy of +/- 1m.

Download sample data

NEXTMAP DTM 5m DXF Sample

NEXTMAP DTM 5m XYZ Sample