LIDAR DSM Time Stamped Tiles: Raster Elevation Archive

LIDAR DSM Time Stamped Tiles is an archive of raster elevation data produced by the Environment Agency for England. Surveys have been conducted since 1998, with repeated coverage in areas like the coast, and data includes heights of buildings, vegetation, and terrain. The GeoTIFF rasters are available at resolutions from 25cm to 2m, have a vertical accuracy of +/-15cm RMSE, and are referenced to the Ordnance Survey Newlyn datum.

Use Cases

• Flood risk modeling based on high-resolution terrain and surface object elevation.
• Monitoring coastal erosion and change by comparing time-stamped surveys.
• Urban planning and 3D city modeling using building and vegetation height data.
• Environmental change assessment leveraging the multi-temporal survey archive.

Strengths

• Offers high vertical accuracy, explicitly stated as +/-15cm RMSE.
• Provides multi-temporal coverage for specific areas, with surveys dating from 1998.
• Contains data at multiple resolutions (25cm, 50cm, 1m, 2m) for different project needs.

Limitations

• Key metadata such as row count, file size, license, and author are missing from all platform entries.
• Spatial coverage is limited to England, as explicitly stated in the descriptions.
• The specific survey dates and transformations vary by location and require consulting a separate metadata index.

Provenance

Source

Environment Agency

Collection Method

Site-specific LIDAR surveys using last-return signals.

Time Range

1998 to present

Freshness

2026-04-07 14:26:54.647197

Geography

England