LIDAR DTM Time Stamped Tiles
The LIDAR DTM (Digital Terrain Model) Time Stamped Tiles product is an archive of raster elevation data produced by the Environment Agency. Site specific LIDAR surveys have been carried out across England since 1998, with certain areas, such as the coastal zone, being surveyed multiple times. Data is available at varying resolutions of 25cm, 50cm, 1m and 2m, depending on project requirements. 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 rasters in 5km zipfiles, data is presented in metres, referenced to Ordnance Survey Newlyn and data aligned to the OS Grid. All LIDAR data has a vertical accuracy of +/-15cm RMSE. The transformation used on the data is specific to the time period of survey. You can also download survey index files which show, for any location, what Time Stamped data is available, the specific dates of survey, resolution of product and what transformation and geoidal model used. 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 elevation models to be generated at spatial resolutions of between 25cm and 2 metres. This metadata record is for Approval for Access product AfA457. Attribution statement: © Environment Agency copyright and/or database right 2020. All rights reserved.
dataset
https://environment.data.gov.uk/DefraDataDownload/?Mode=survey
protocol: DSP:ESRI
name: Survey_Download
description: Survey Download
https://environment.data.gov.uk/DefraDataDownload/?mapService=EA/SurveyIndexFiles&Mode=spatial
protocol: DSP:ESRI
name: Metadata Shapefile Index Catalogues - Download
description: Download the coverage metadata files
https://environment.data.gov.uk/spatialdata/survey-index-files/wms
protocol: OGC:WMS
name: Metadata Index Catalogues - WMS
description: Coverage metadata files - Web Map Service
https://environment.data.gov.uk/spatialdata/survey-index-files/wfs
protocol: OGC:WFS
name: Metadata Index Catalogues - WFS
description: Coverage metadata files - Web Feature Service
https://environment.data.gov.uk/datafiles/2112b8cec0e545ed8a3354394f4cd0a8
protocol: WWW:LINK-1.0-http--link
name: Z_Difference_Grid_for_adjusting_data_between_OSTN02_and_OSTN15.
description: Z Difference Grid for adjusting data between OSTN02 and OSTN15.
https://support.environment.data.gov.uk/hc/en-gb/sections/360001747351-Survey-Data-Catalogue
protocol: http:
name: Survey_Data_FAQs
description: Survey Data Catalogue FAQs
e0c64fdb-2502-4efd-b98b-243f70d8e53e
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
elevation
OpenData
Elevation
Mapping
LIDAR
flood
mapping
GIS digital format
remote sensing
publication
2010-01-13
-5.7
1.8
55.8
50
http://data.ordnancesurvey.co.uk/doc/country/england
1996-12-01
2021-01-31
creation
1998-01-10
revision
2021-03-01
quarterly
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.
Open format | Geo Tagged Image File Format (GeoTIFF)
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
https://support.environment.data.gov.uk/hc/en-gb
description: Defra Data Services Forum
pointOfContact
Environment Agency
metadata@environment-agency.gov.uk
pointOfContact
2022-03-21