d02d2258-85aa-455f-e044-0003ba9b0d98 English dataset British Geological Survey +44 115 936 3100 Environmental Science Centre, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-04-16 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13605691 OSGB 1936 / British National Grid (EPSG::27700) Digital Terrain Model (DTM) at 5 metre resolution (GB-wide) derived from photogrammetry (2008-2012) 2012-12 creation http://data.bgs.ac.uk/id/dataHolding/13605691 The Digital Terrain Model (DTM) is a bare earth model, posted at 5m with a vertical accuracy of less than 60cm RMSE (root mean square error). The model represents the bare ground surface without any objects like trees and buildings. The dataset covers Great Britain. The first surface model, the Digital Surface Model (DSM), which represents the earth’s surface including all objects on the surface, is produced using the digital stereo aerial photography acquired by Getmapping. The DSM is edited to produce a 5m DTM product. A suite of algorithms have been applied to semi-automatically edit the DSM and remove unwanted surface features such as buildings and vegetation. These algorithms include a routine which reduces the woodland canopy areas based on a bounding polygon. This requires some manual intervention to create bounding polygons for woodland extents and identify true ground level. In addition, break lines are captured where required to ensure true terrain features are not removed and that bodies of water, such as lakes, remain flat. The PGA Elevation data offers improved spatial resolution compared to the NEXTMap data. The data is from the Pan Government Agreement (PGA) and an in-perpetuity license has been granted to BGS. The data is being managed by the Earth and Planetary Observation and Monitoring (EPOM) Team in support of the wider BGS Programme. Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk pointOfContact notPlanned https://resources.bgs.ac.uk/images/geonetworkThumbs/d02d2258-85aa-455f-e044-0003ba9b0d98.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication DEM Elevation BGS Thesaurus of Geosciences 2022 revision UK Location (INSPIRE) dataCentre NERC_DDC otherRestrictions The data is for BGS internal use. Detailed copyright and licensing information can be found at S:\PGA_Elevation\licensing_and_copyright otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk) for advice, should the position not be clear. 50000 English geoscientificInformation ISO 3166_2 2009 revision GBN British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation GREAT BRITAIN [id=139600] -8.6500 1.7800 49.7700 60.8600 2008 2012 Delivery of the data to BGS is ongoing. The supplier is currently undergoing QA of the dataset. They have full national coverage of England, Scotland and Wales but there are some errors that they are addressing. These errors include steps and gaps. There are also missing tiles, which will be filled in. Once the full dataset has been received by BGS, there will be no further changes or additions to the basic dataset. BGS will not modify the original data but will add to it by for example merging data. ASCII witheld Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk distributor https://www.bgs.ac.uk/ WWW:LINK-1.0-http--link BGS Homepage The BGS Homepage is an entry point to the BGS data services. information dataset dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The first surface model, the Digital Surface Model (DSM), is produced using the digital stereo aerial photography acquired by Getmapping. The DSM is edited to produce a 5m DTM product. A suite of algorithms have been applied to semi-automatically edit the DSM and remove unwanted surface features such as buildings and vegetation. These algorithms include a routine which reduces the woodland canopy areas based on a bounding polygon. This requires some manual intervention to create bounding polygons for woodland extents and identify true ground level. In addition, break lines are captured where required to ensure true terrain features are not removed and that bodies of water, such as lakes, remain flat. The result is a 5m posted DTM with a vertical accuracy of less than 60cm RMSE.