dataset · England
England 1m Composite DTM/DSM (Environment Agency)
The LIDAR Composite DTM/DSM is a raster terrain model covering ~99% of England at 1m spatial resolution, produced by the UK Environment Agency in 2022. The model contains 3 bands of terrain data: a Digital Terrain Model (DTM), a first return Digital Surface Model (DSM), and a last return DSM. The DTM is produced from the last or only laser pulse returned to the sensor. Surface objects are removed from the DSM, using bespoke algorithms and manual editing of the data, to produce a terrain model of
Visit source ↗Source details
Licence: proprietary
Evidence quality: 43.2
Listed in gee public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- Digital Terrain Model (DTM), 1 m · first return Digital Surface Model (DSM), 1 m · last return DSM, 1 m
- Coverage docs-verified
- England, approximately 99% covered · 2000-06-06 to 2022-04-02
- Resolution docs-verified
- 1 m pixel size (all bands); vertical accuracy +/-15cm RMSE per survey
- Formats docs-verified
- Google Earth Engine image (ee.Image, raster)
- Access docs-verified
- Free to use with attribution via Google Earth Engine (Earth Engine registration required). Attribution: 'Environment Agency copyright and/or database right 2022. All rights reserved.' Entry metadata lists licence as 'proprietary'.
Useful for
- Use cases llm-inferred
- FRA: terrain input for overland flow path and flood extent analysis across a site or catchment · Drainage strategy: DTM-based surface routing and catchment delineation for runoff assessment · Civils: cut/fill and earthworks baseline using DTM versus first return DSM for surface objects
- Audience llm-inferred
- flood consultants · drainage engineers · hydrologists · GIS analysts · civils engineers
Limitations
- Constraints llm-inferred
- Covers ~99% of England only, not the whole country · Composite of surveys from 2000 to 2022, so the date of survey varies by location · First return DSM coverage does not match last return DSM coverage · Google Earth Engine is free for research, education and nonprofit use; commercial use may need a paid Earth Engine arrangement · Entry metadata lists licence as 'proprietary', which differs from the open-style attribution terms in the docs · No update cadence is stated, and the composite reflects 2022 production
Evidence
- ee.Image('UK/EA/ENGLAND_1M_TERRAIN/2022')
- https://developers.google.com/earth-engine/datasets/catalog/UK_EA_ENGLAND_1M_TERRAIN_2022
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.