LIDAR Composite DTM 2020: 2m Resolution Terrain Model for England

A raster elevation model covering over 93% of England at a 2-meter spatial resolution. Produced by the Environment Agency in 2020, it combines data from the Time Stamped archive and National LIDAR Programme, with surveys conducted between June 2000 and September 2020. The Digital Terrain Model (DTM) is derived from processed LIDAR signals to represent the bare earth surface, with a vertical accuracy of +/-15cm RMSE.

Use Cases

• Flood risk modeling based on high-resolution terrain elevation data.
• Infrastructure planning and line-of-sight analysis using the 2m resolution DTM.
• Environmental change detection leveraging the composite of surveys from 2000 to 2020.
• Hydrological analysis based on the bare earth surface model derived from LIDAR.

Strengths

• Covers over 93% of England, providing wide spatial coverage.
• High 2-meter spatial resolution for detailed terrain representation.
• Combines the best available data from multiple LIDAR sources and surveys.
• Has a specified vertical accuracy of +/-15cm RMSE.

Limitations

• This dataset has been retired; a newer version is available, indicating this version is outdated.
• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Environment Agency, United Kingdom.

Collection Method

Derived from airborne LIDAR surveys, processed to create a Digital Terrain Model (DTM) by removing surface objects.

Time Range

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

Freshness

Dataset is retired; the underlying data is from 2020, with surveys up to September 2020.

Geography

England, United Kingdom.