LIDAR Point Cloud
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. Our LIDAR point cloud product is a collection of hundreds of millions, or sometimes billions of highly accurate 3-dimensional x,y,z points and component attributes. Our gridded raster products such as our digital surface and terrain models are derived from this 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. Supplied as individual LAZ files labeled by Ordinance Survey grid reference the point cloud is available for surveys going back to 2006. Historic data are available for some areas where we have carried out repeat surveys, such as in the coastal zone for monitoring change. Although the DSM and DTM 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. All LIDAR data has a vertical accuracy of +/-15cm RMSE. 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. Coverage metadata files showing data extent are also available. The coverage files contain metadata for each tile including the start and end date flown of a survey, and what additional component information the point cloud contains. This metadata record is for Approval for Access product AfA457. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.
dataset
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/DefraDataDownload/?Mode=survey
protocol: DSP:ESRI
name: Survey_Download
description: Survey Download
https://environment.data.gov.uk/arcgis/rest/services/EA/SurveyIndexFiles/MapServer
protocol: WWW:LINK-1.0-http--link
name: Survey_Index_Shape_Files_ESRI_REST_Endpoint
description: Survey Index Shape Files - ESRI REST Endpoint
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
https://environment.data.gov.uk/arcgis/rest/services/EA/SurveyIndexFiles/FeatureServer
protocol: WWW:LINK-1.0-http--link
name: LIDAR_Point_Cloud_ESRI_REST_Feature_Server_Endpoint
description: LIDAR Point Cloud ESRI REST Feature Server Endpoint
e0c64fdb-2502-4efd-b98b-243f70d8e53e
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
elevation
OpenData
Elevation
Mapping
LIDAR
flood
GIS digital format
remote sensing
mapping
publication
2010-01-13
-5.7
1.8
55.8
50
http://data.ordnancesurvey.co.uk/doc/country/england
2004-11-25
2021-01-31
creation
2005-01-01
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 | 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.
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