Groundwater Flooding Susceptibility
The groundwater flooding susceptibility data shows the degree to which areas of England, Scotland and Wales are susceptible to groundwater flooding on the basis of geological and hydrogeological conditions. It does not show the likelihood of groundwater flooding occurring, i.e. it is a hazard not risk-based dataset. The data covers Great Britain in a consistent manner. It will be updated periodically (at least bi-annually) as the underlying datasets or the methodology to derive the groundwater flooding susceptibility data are improved. The data is based on data sets with a range of resolutions, but the derived data set has an effective spatial resolution of about 50m by 50m. The susceptibility data is suitable for use for regional or national planning purposes where the groundwater flooding information will be used along with a range of other relevant information to inform land-use planning decisions. It might also be used in conjunction with a large number of other factors, e.g. records of previous incidence of groundwater flooding, rainfall, property type, and land drainage information, to establish relative, but not absolute, risk of groundwater flooding at a resolution of greater than a few hundred metres. In all cases it is strongly recommend the confidence data is used in conjunction with the groundwater flooding susceptibility data. The susceptibility data should not be used on its own to make planning decisions at any scale, and, in particular, should not be used to inform planning decisions at the site scale. The susceptibility data cannot be used on its own to indicate risk of groundwater flooding.
dataset
protocol: HTTP
name: BGS Homepage
description: The BGS Homepage is an entry point to the BGS data services.
function: information
http://data.bgs.ac.uk/id/dataHolding/13603085
eng
OGP
urn:ogc:def:crs:EPSG::27700
The data are updated when new data become available. GROUNDWATER FLOODING DATABANK VERSION 1. Systematic national coverage with GIS data. Derived from other BGS datasets using a documented methodology. The data can be viewed at a range of scales, no typical scale can be identified.
geoscientificInformation
publication
2008-06-01
Water flooding
Groundwater
Floods
revision
2011
NERC_DDC
-8.6500
1.7800
60.8600
49.7700
revision
2009
GB
creation
1979
UK [id=139300]
revision
2009
UKM
2006
creation
2006
asNeeded
This dataset is derived in part from BGS DiGMapBG-50 data attributed with BGS Permeability Index data, from groundwater levels from BGS WellMaster database and from regional hydrogeological contours taken from the IGS series hydrogeological maps. The data has been produced using a 'rule-based' approach. The first step was to apply 'rules' to identify areas, based on geological considerations, where groundwater flooding could not occur, i.e. areas where non-aquifers are present at the ground surface. For all areas that were geologically susceptible, a second suite of rules was used to produce a national groundwater level surface using data taken from published BGS groundwater level contours, groundwater levels in BGS WellMaster database and inferred from some river levels. A further suite of rules was used to modify this groundwater level surface so that it was representative of conditions of groundwater flooding. Finally, this modified groundwater surface was compared with a digital terrain model (DTM) of the ground surface elevation and a final set of rules was used to zone the degree of susceptibility depending on the modelled depth of the groundwater surface below the land surface.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
MapInfo GIS .tab files
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.
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
distributor
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
originator
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
pointOfContact
British Geological Survey
Maclean Building, Crowmarsh Gifford
WALLINGFORD
OX10 8BB
United Kingdom
01491 838800
01491 692345
custodian
British Geological Survey
Maclean Building, Crowmarsh Gifford, Wallingford, Oxon, United Kingdom, OX10 8BB
WALLINGFORD
OX10 8BB
United Kingdom
+44 115 936 3100
pointOfContact
2020-10-20