Dataset description

The data comprises a GIS layer representing the permeability of bedrock for Great Britain The permeability data has been derived from DiGMap-GB (Digital Geological Map Data of Great Britain), and therefore reflects the scale of DiGMap-GB. For the majority of the Great Britain, the scale is 1:50,000, however in areas where the geology is not mapped to this scale, 1:250,000 data are. The data is updated annually, or after a major new release of DiGMap-GB. The permeability data describes the fresh water flow through geological deposits and the ability of a lithostratigraphical unit to transmit water. Maximum and minimum permeability indices are given for each geological unit to indicate the range in permeability likely to be encountered and the predominant flow mechanism (fracture or intergranular). Neither of the assigned values takes into account the thickness of either the unsaturated or saturated part of the lithostratigraphical unit. The data can be used freely internally, but is licensed for commercial use. It is best displayed using a desktop GIS, and is available in vector format as ESRI shapefiles and MapInfo TAB files.

Constraints

Data can be used internally, but is licensed for commercial use.

Further information

For more information please contact:

Enquiries
British Geological Survey
Environmental Science Centre, Nicker Hill, Keyworth
Nottingham
NG12 5GG

Tel : +44 (0)115 936 3143
Fax :+44 (0)115 936 3276
Email :enquiries@bgs.ac.uk

Associated dataset(s)

Digital Geological Map Data of Great Britain - 50k (DiGMapGB-50)

Further details

Dataset details

Language	English
Curator	British Geological Survey
Supply media/format	ESRI Shapefile Not applicable MapInfo TAB Not applicable
Storage format	Digital:ESRI Files Digital:Map Info Files
Frequency of update	annually
Start of capture	29th July 2005
End of capture	Not known
Contact details
Department	Enquiries
Organisation	British Geological Survey
Address	Environmental Science Centre, Nicker Hill, Keyworth
City	Nottingham
County	Nottinghamshire
Country	United Kingdom
Postcode	NG12 5GG
E-mail	enquiries@bgs.ac.uk
Telephone	+44 (0)115 936 3143
Fax	+44 (0)115 936 3276
Keywords
Topic category	geoscientificInformation (information pertaining to earth sciences)
Keywords and Keyphrases	GROUND WATER MOVEMENT HYDROGEOLOGY PERMEABILITY
Keyword source	BGS Keyphrases
Spatial details
Spatial Reference System	OSGB 1936 / British National Grid [27700]
Dataset extent
Coverage (Lat/Long)	North boundary : 53.49 East boundary  : 1.84 South boundary : 51.64 West boundary  : -2
Metadata
Metadata language	English
Metadata last updated	19th November 2009
Metadata standard	ISO standard 19115:2003
Copyright and IPR
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.

W -2	53.49 N
S 51.64	1.84 E