LIDAR Composite DTM 2020: 1m Resolution Terrain Model for England

Over 88% of England is covered by this 1-meter resolution Digital Terrain Model produced by the Environment Agency in 2020. It is derived from a composite of LIDAR surveys conducted between June 2000 and September 2020, with a vertical accuracy of +/-15cm RMSE. The data is available as GeoTiff files in 5km grids, with surface objects removed to represent the bare earth terrain.

Use Cases

• Flood risk modeling and hydrological analysis based on the high-resolution terrain data.
• Infrastructure and urban planning based on the detailed 1m resolution elevation model.
• Environmental change detection and monitoring based on the composite of surveys spanning 20 years.
• Training computer vision models for terrain feature extraction based on the raster elevation data.

Strengths

• Covers over 88% of England, providing extensive spatial coverage.
• High 1-meter spatial resolution and +/-15cm vertical accuracy.
• Composite integrates the newest and best resolution data from surveys spanning 2000 to 2020.

Limitations

• This specific dataset version has been retired, indicating it is not the current release.
• Metadata completeness is limited; column-level documentation and file size are unknown.
• The data may reflect geographic bias, as coverage is not 100% of England.

Provenance

Source

Environment Agency, United Kingdom.

Collection Method

Derived from airborne LIDAR surveys, merged and re-sampled from the Time Stamped archive and National LIDAR Programme.

Time Range

Surveys undertaken between 6th June 2000 and 1st September 2020.

Freshness

The dataset is from 2020 and has been retired, indicating it is not the most recent version.

Geography

England.