LIDAR Time Stamped Point Cloud
The LIDAR point cloud is an archive of hundreds of millions, or sometimes billions of highly accurate 3-dimensional x,y,z points and component attributes produced by the Environment Agency. The environment agecy site specific LIDAR DSM and DTM Time Stamped Tiles gridded raster products are derived from the point cloud. The component attributes a point cloud contains can provide valuable additional information to supplement elevation and can enable the user to make bespoke raster products such as canopy height models or intensity rasters. Site specific LIDAR surveys have been carried out across England since 1998, with certain areas, such as the coastal zone, being surveyed multiple times. The point cloud is available for surveys going back to 2006. Although the DSM and DTM Tile Stamped Tiles products are derived from the point cloud data there may not necessarily be a matching point cloud for each surface model due to historic data archiving processes. During processing the point cloud classifies the laser returns in the 'ground' and 'surface objects'. Further manual editing undertkaen on the derived digital terrain model (DTM) means the classifed ground points in the point cloud data will not match the final derived DTM. Data is available in 5km download zip files for each year of survey. Within each downloaded zip file are LAZ files aligned to the Ordinance Survey grid. The size of each tile is dependent upon the spatial resolution of the data. Please refere to the coverage metadata files for the start and end date flown of a survey as well as additional component information the point cloud contains such as the average point density. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.
dataset
https://environment.data.gov.uk/DefraDataDownload/?Mode=survey
protocol: http
name: Survey Data - Download
description: Download the survey data
https://environment.data.gov.uk/explore/094d4ec8-4c21-4aa6-817f-b7e45843c5e0?download=true
protocol: http
name: Metadata Shapefile Index Catalogues - Download
description: Download the coverage metadata file
https://environment.data.gov.uk/spatialdata/survey-index-files/wms
protocol: http
name: Metadata Index Catalogues - WMS
description: Coverage metadata files - Web Map Service
https://environment.data.gov.uk/spatialdata/survey-index-files/wfs
protocol: http
name: Metadata Index Catalogues - WFS
description: Coverage metadata files - Web Feature Service
https://support.environment.data.gov.uk/space/DPK/15827049/Survey+Data+Catalogue
protocol: http
name: Survey Data FAQs
description: Survey Data FAQs
e0c64fdb-2502-4efd-b98b-243f70d8e53e
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
elevation
LIDAR
environment
elevation
Elevation
publication
2008-06-01
mapping
publication
2010-01-13
flood
publication
2010-01-13
GIS digital format
publication
2010-01-13
remote sensing
publication
2010-01-13
mapping
publication
2010-01-13
-5.7
1.8
55.8
50
2004-11-25
2021-01-31
creation
2005-01-01
revision
2023-12-15
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 | Lidar Data Exchange Format (LAZ)
1.2
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
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://environment.data.gov.uk/support
description: Defra Data Services Forum
pointOfContact
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
pointOfContact
2023-12-16