LIDAR Composite DSM 2017: 1m Resolution Digital Surface Model for England

A 2017 raster elevation model covering over 60% of England at 1-meter spatial resolution. Produced by the Environment Agency, this Digital Surface Model (DSM) is derived from merged and re-sampled LIDAR archives, using the newest and best resolution data from repeat surveys. The dataset includes heights of objects like buildings and vegetation, has a vertical accuracy of +/-15cm RMSE, and is referenced to the Ordnance Survey Newlyn datum.

Use Cases

• Modeling urban 3D structures based on building and vehicle heights captured in the DSM.
• Analyzing vegetation canopy height and coverage based on surface model data that includes plant features.
• Creating high-resolution terrain maps for flood risk assessment based on the 1m elevation data.
• Generating tinted shaded relief visualizations for cartography based on the available WMS feed.

Strengths

• Covers over 60% of England, providing substantial geographic coverage.
• High 1-meter spatial resolution for detailed surface analysis.
• Has a stated vertical accuracy of +/-15cm Root Mean Square Error (RMSE).
• Incorporates the newest, best-resolution data from the agency's time-stamped archive.

Limitations

• The dataset is noted as no longer available, with a newer version referenced.
• Column-level documentation and sample data are unavailable, requiring inspection after download.
• Specific file formats, size, and row counts are unknown, limiting suitability assessment.

Provenance

Source

Environment Agency, United Kingdom.

Collection Method

Derived from airborne LIDAR surveys, with data merged, re-sampled, and composited from a full time-stamped archive.

Time Range

2017 (composite version).

Freshness

The composite is updated annually, but this specific version is from 2017 and is superseded.

Geography

England (over 60% coverage).