Property Subsidence Assessment dataset 2022
The BGS Property Subsidence Assessment (PSA) dataset provides insurers and homeowners access to a better understanding of the shrink-swell hazard at both the individual property and/or postcode level for England and Wales. It builds upon the GeoSure shrink-swell data by mapping the hazard to the individual building polygon and considering the other susceptibility factors of building type, foundation depth, and drainage and tree proximity. The user receives GIS building polygons with an overall susceptibility to subsidence score between 1-100. Scores are also classified from non-plastic to very high. Each building polygon is also scored from 1-10 for each subsidence factor (geology, foundation, drainage, building type, building storey and tree proximity). Postcode data is also available as a table showing the ‘average’ PSA score for all buildings within the postcode. The identification of shrink-swell related subsidence prone areas, alongside the inclusion of potential sources to exacerbate this phenomena, can better inform insurers and homeowners and form the basis to make decisions concerning prevention and remediation. The product enhances geological information obtained from GIP and GeoSure via the inclusion of the crucial shrink-swell susceptibility factors (proximity to trees and foundation depth). This therefore allows the derivation of a risk element for the housing stock at Building level, which is then generalised to Postcode level.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2022
British Geological Survey
-Enquiries
Environmental Science Centre, Nicker Hill, Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom
0115 936 3276
British Geological Survey
-Enquiries
Environmental Science Centre, Nicker Hill, Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom
0115 936 3276
- Maintenance and update frequency
- notPlanned
- GEMET - INSPIRE themes
- BGS Thesaurus of Geosciences
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Subsidence
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Foundations
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Property damage
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- Keywords
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NERC_DDC
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- Limitations on Public Access
- otherRestrictions
- Other constraints
- license
- Use constraints
- otherRestrictions
- Other constraints
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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.
- Other constraints
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The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage. iprdigital@bgs.ac The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage.
- Spatial representation type
- vector
- Topic category
-
- Geoscientific information
- Extent
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EAW
- Dataset Reference Date ()
- 2009
- Extent
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ENGLAND & WALES [id=149000]
- Dataset Reference Date ()
- 1979
))
- Begin date
- 2011
- End date
- 2022
Spatial Reference System
Distribution Information
- Data format
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ESRI Shapefile
() -
txt file
()
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- Resource Locator
- BGS Datasets - Property subsidence assessment Homepage
- Resource Locator
- Digital Object Identifier (DOI)
- Resource Locator
- BGS Datasets - Property subsidence assessment Homepage
- Resource Locator
- Digital Object Identifier (DOI)
- Quality Scope
- dataset
- Other
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dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
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See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
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See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
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Input data: OS OpenMap Local building polygons GeoSure shrink-swell National Tree Map (Bluesky) Office for National Statistics (UK property build period) Office for National Statistics (UK property type) OS Code Point open Process: GeoSure and the other input datasets are mapped to the OS Open building polygons. Each building is then scored for each input factor. Input factors are then combined via a weighted algorithm to derive the PSA score for each building, this score is then classified into the PSA classes. Building polygon scores are aggregated to produce the postcode score. Processing was carried out using python scripts in ARCGIS.
Metadata
- File identifier
- e4ca40d4-a6bb-399b-e053-0937940aef71 XML
- Metadata Language
- English (en)
- Resource type
- dataset
- Metadata Date
- 2023-03-30
- Metadata standard name
- UK GEMINI
- Metadata standard version
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2.3
British Geological Survey
Environmental Science Centre,Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom