National LIDAR Programme

Name: National LIDAR Programme
Creator: Defra

DatasetQuery nowOpen workbench Subscribe🇬🇧United Kingdom

The Environment Agency National LIDAR Programme provides accurate elevation data at 1m spatial resolution for all of England. In 2017 we divided the country into 302 survey blocks covering all of England which were subsequently captured during the winter months (approximately November to April each year) between January 2017 and February 2023. These are known as our 'Phase 1' national lidar programme surveys. Subsequently we have undertaken repeat surveys of specific blocks based on the on-going requirements for upto date elevation data. Each repeat survey block is given a new incrementing phase number, for example the second time we capture a block this is that blocks 'phase 2' whilst the 3rd time will be 'phase 3'. There is not curretly a plan to capture all the origianl phase 1 survey blocks over a rolling programme with repeat surveys be based on the requirements for upto date elevation data for an area. All data is published through the DEFRA Data Services survey portal on a quartely on-going bases and a number of different products area available for each survey block. All products are available in 5km tiles aligned to the ordnance survey grid. The tiles are named by the unique survey id, OS grid reference and the first and last survey date of the survey id (PXXXXXOSOSOSSDFLOWNEDFLOWN.). The surface models are available in GeoTiff raster format whilst the point cloud is available in.laz. An index catalogue is also available with provides survey specific information about each tile. Outlined below is a description of each product that is available for each survey block: LIDAR Point Cloud: is the discrete LIDAR returns that are used in the creation of the surface models. Supplied in *.laz format they the discrete LIDAR returns have been classified into ground, low, medium and high vegetation classes using an automated classification process. Digital Surface Model(s) (DSM) are created from the last or only LIDAR pulse returned to the sensor and con.

geospatial

⬇ Download data Download ZIP Download ZIP Download data Download data Download data

Data schema (22 fields)

Click a field to see example values.

Field	Type	Description
polygon_idPolygon id	string	—
dsm_fnDsm fn	string	—
dtm_fnDtm fn	string	—
fz_dsm_fnFz dsm fn	string	—
int_lz_fnInt lz fn	string	—
tilename	string	—
sd_flownSd flown	dateTime	—
ed_flownEd flown	dateTime	—
surveys	string	—
season	string	—
pnt_fnPnt fn	string	—
resolution	decimal	—
year	int	—
supplied	dateTime	—
latest	string	—
vom_fnVom fn	string	—
gdb_geomattr_dataGdb geomattr data	hexBinary	—
shape	geometry	—
delivered	string	—
filename	string	—
od_dtm_fnOd dtm fn	string	—
od_dsm_fnOd dsm fn	string	—

Schema captured from wfs 4 days ago.

Query the data

Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.

Where=

Sort by

Sample data (3 records)

Record 1year: 2018 · dsm_fn: DSM_ST7525_P_10651_20180225_20180225.tif

{
  "year": 2018,
  "dsm_fn": "DSM_ST7525_P_10651_20180225_20180225.tif",
  "dtm_fn": "DTM_ST7525_P_10651_20180225_20180225.tif",
  "latest": "No",
  "pnt_fn": "ST7525_P_10651_20180225_20180225.laz",
  "season": "2017/2018",
  "vom_fn": "VOM_ST7525_P_10651_20180225_20180225.tif",
  "surveys": "18-067 [ 2018/02/25 ], 18-066 [ 2018/02/25 ]",
  "ed_flown": "2018-02-25T00:00:00Z",
  "sd_flown": "2018-02-25T00:00:00Z",
  "supplied": null,
  "tilename": "ST7525",
  "delivered": "20190218",
  "fz_dsm_fn": "FZ_DSM_ST7525_P_10651_20180225_20180225.tif",
  "int_lz_fn": "Intensity_LZ_ST7525_P_10651_20180225_20180225.tif",
  "polygon_id": "P_10651",
  "resolution": 1,
  "gdb_geomattr_data": null
}

Record 2year: 2018 · dsm_fn: DSM_ST7530_P_10651_20180225_20180225.tif

{
  "year": 2018,
  "dsm_fn": "DSM_ST7530_P_10651_20180225_20180225.tif",
  "dtm_fn": "DTM_ST7530_P_10651_20180225_20180225.tif",
  "latest": "No",
  "pnt_fn": "ST7530_P_10651_20180225_20180225.laz",
  "season": "2017/2018",
  "vom_fn": "VOM_ST7530_P_10651_20180225_20180225.tif",
  "surveys": "18-067 [ 2018/02/25 ], 18-066 [ 2018/02/25 ]",
  "ed_flown": "2018-02-25T00:00:00Z",
  "sd_flown": "2018-02-25T00:00:00Z",
  "supplied": null,
  "tilename": "ST7530",
  "delivered": "20190218",
  "fz_dsm_fn": "FZ_DSM_ST7530_P_10651_20180225_20180225.tif",
  "int_lz_fn": "Intensity_LZ_ST7530_P_10651_20180225_20180225.tif",
  "polygon_id": "P_10651",
  "resolution": 1,
  "gdb_geomattr_data": null
}

Record 3year: 2018 · dsm_fn: DSM_ST7535_P_10651_20180225_20180225.tif

{
  "year": 2018,
  "dsm_fn": "DSM_ST7535_P_10651_20180225_20180225.tif",
  "dtm_fn": "DTM_ST7535_P_10651_20180225_20180225.tif",
  "latest": "No",
  "pnt_fn": "ST7535_P_10651_20180225_20180225.laz",
  "season": "2017/2018",
  "vom_fn": "VOM_ST7535_P_10651_20180225_20180225.tif",
  "surveys": "18-067 [ 2018/02/25 ], 18-066 [ 2018/02/25 ]",
  "ed_flown": "2018-02-25T00:00:00Z",
  "sd_flown": "2018-02-25T00:00:00Z",
  "supplied": null,
  "tilename": "ST7535",
  "delivered": "20190218",
  "fz_dsm_fn": "FZ_DSM_ST7535_P_10651_20180225_20180225.tif",
  "int_lz_fn": "Intensity_LZ_ST7535_P_10651_20180225_20180225.tif",
  "polygon_id": "P_10651",
  "resolution": 1,
  "gdb_geomattr_data": null
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Query examples

curl -s 'https://environment.data.gov.uk/spatialdata/survey-index-files/wfs?service=WFS&version=2.0.0&request=GetCapabilities' -H 'Accept: application/json'

List the feature types (layers) and supported operations.