LIDAR Composite DTM 2020 - 2m

The LIDAR Composite DTM (Digital Terrain Model) is a raster elevation model covering >93% of England at 2m spatial resolution.

Produced by the Environment Agency in 2020, this dataset is derived from a combination of our Time Stamped archive and National LIDAR Programme, which has been merged and re-sampled to give the best possible coverage. Where repeat surveys have been undertaken the newest, best resolution data is used. Where data was resampled a bilinear interpolation was used before being merged.

The 2020 LIDAR Composite contains surveys undertaken between 6th June 2000 and 1st September 2020. Please refer to the survey index files which shows, for any location, what Time Stamped survey or National LIDAR Programme block went into the production of the LIDAR composite for a specific location.

The DTM (Digital Terrain Model) is produced from the last return LIDAR signal. We remove surface objects from the Digital Surface Model (DSM), using bespoke algorithms and manual editing of the data, to produce a terrain model of just the surface. Available to download as GeoTiff files in 5km grids, data is presented in metres, referenced to Ordinance Survey Newlyn, using the OSTN’15 transformation. All LIDAR data has a vertical accuracy of +/-15cm RMSE.

Light Detection and Ranging (LIDAR) is an airborne mapping technique, which uses a laser to measure the distance between the aircraft and the ground. Up to 500,000 measurements per second are made of the ground, allowing highly detailed terrain models to be generated at spatial resolutions of between 25cm and 2 metres. The Environment Agency’s open data LIDAR archives includes the Point Cloud data, and derived raster surface models of survey specific areas dating back to 1998 and composites of the best data available in any location.

This metadata record is for Approval for Access product AfA458.

Attribution statement: (c) Environment Agency copyright and/or database right 2021. All rights reserved. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved.

Date (Creation): 2021-06-01

Date (Revision): 2021-06-01

Citation identifier: 668881ad-4f8f-42bd-b835-89acf0269496_resource

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Environment Agency		DSPcustomerforum@environment-agency.gov.uk	Point of contact

Maintenance and update frequency: Not planned

Theme

OpenData

Use limitation: Open Government Licence

Access constraints: Other restrictions

Access constraints: License

Access constraints: Copyright

Other constraints: There are no public access constraints to this data. Use of this data is subject to the licence identified.

Spatial representation type: Vector

Language: English

Character set: UTF8

Topic category

Environment
Elevation

Extent type code: Yes

Geographic identifier: http://data.ordnancesurvey.co.uk/doc/country/england

Begin date: 2000-06-06

End date: 2020-09-01 Unknown

Reference system identifier: http://www.opengis.net/def/crs/EPSG/0/27700

Distribution format

Name	Version
Open format \| Geo Tagged Image File Format (GeoTIFF)

OnLine resource

Protocol	Linkage	Name
DSP:ESRI	https://environment.data.gov.uk/DefraDataDownload/?Mode=survey	Survey_Download
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDARCompositeDTM2m2020/MapServer	LIDARCompositeDigitalTerrainModel(DTM)_2m_2020_PublicESRIRESTEndpoint
WMS	https://environment.data.gov.uk/spatialdata/lidar-composite-digital-terrain-model-dtm-2m-2020/wms	LIDARCompositeDigitalTerrainModel(DTM)_2m_2020_WMS
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDAR_Composite_2m_DTM_2020_Aspect/ImageServer	LIDARCompositeDTM2020_2m_AspectImageServiceEndpoint
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDAR_Composite_2m_DTM_2020_Elevation/ImageServer	LIDARCompositeDTM2020_2m_ElevationImageServiceEndpoint
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDAR_Composite_2m_DTM_2020_Hillshade/ImageServer	LIDARCompositeDTM2020_2m_HillshadeImageServiceEndpoint
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDAR_Composite_2m_DTM_2020_Slope/ImageServer	LIDARCompositeDTM2020_2m_SlopeImageServiceEndpoint
WWW:LINK-1.0-http--link	https://environment.data.gov.uk/image/rest/services/SURVEY/LIDAR_Composite_2m_DTM_2020_TSR/ImageServer	LIDARCompositeDTM2020_2m_TSRImageServiceEndpoint
DSP:ESRI	https://environment.data.gov.uk/DefraDataDownload/?mapService=EA/SurveyIndexFiles&Mode=spatial	Metadata Shapefile Index Catalogues - Download
OGC:WMS	https://environment.data.gov.uk/spatialdata/survey-index-files/wms	Metadata Index Catalogues - WMS
OGC:WFS	https://environment.data.gov.uk/spatialdata/survey-index-files/wfs	Metadata Index Catalogues - WFS
http:	https://support.environment.data.gov.uk/hc/en-gb/sections/360001747351-Survey-Data-Catalogue	Survey Data Catalogue FAQs
WWW:LINK-1.0-http--link	https://mapapps2.bgs.ac.uk/waterdataexplorer/index.html?extent=55648.1126%2C12540.6051%2C902316.4726%2C595286.5622%2C27700&showLayers=LondonEarth_136_0%3BLondonEarth_136_1%3BLondonEarth_136_2%3BLondonEarth_136_3%3BLondonEarth_136_4%3Bwms_668_LC.LandCoverSurfaces%3Bwms_9158_LC.25m.GB%3Bwms_7301_LC.25m.GB%3BLIDAR_Composite_2m_DTM_2019_Elevation_9592%3BLIDAR_Composite_2m_DTM_2019_Slope_6196	Water Data Explorer Web GIS

Hierarchy level: Dataset

Statement: Light Detection and Ranging (LIDAR) is an airborne mapping technique, which uses a laser to measure the height of the terrain and surface objects on the ground such as trees and buildings. Hundreds of thousands of measurements per second are made of the ground allowing highly detailed terrain models to be generated at spatial resolutions of between 25cm and 2 metres. The vertical accuracy of the LIDAR dataset is +/-15cm RMSE.

Metadata

File identifier: 73c25700-052a-4d3e-87cf-71326fe2d73a XML

Metadata language: English

Character set: UTF8

Parent identifier: Spatial Data Explorer (WebGIS)
863bb531-4c51-4a3f-858c-c592e8ba5bf7

Hierarchy level: Dataset

Date stamp: 2024-06-11T14:35:24.95194Z

Metadata standard name: Gemini

Metadata standard version: 2.2

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Environment Agency		metadata@environment-agency.gov.uk	Point of contact

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LIDAR_DTM.PNG

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