GSNI GeoIndex Bedrock Aquifer

This map layer shows the classification of bedrock, as mapped at 1:250 000 scale, into aquifer categories. This classification was initially undertaken to support groundwater assessments undertaken for the Water Framework Directive (2000/60/EC). The classification was produced on behalf of Northern Ireland Environment Agency (NIEA) (DoE, Northern Ireland) and is the standard classification currently used for assessing activities which may impact on groundwater resources. The classification comprises six categories of bedrock aquifer, based upon relative resource productivity and flow type. Bedrock aquifer classification categories and overview description Bedrock High potential productivity fracture flow: Bh (f): High to moderate yields probable, however dependence on fracture flow makes poorer yields possible. Generally includes element of regional flow (kms). High potential productivity fracture/intergranular flow: Bh (l to f): High to moderate yields probable, however part dependence on fracture flow makes poorer yields possible. Dual porosity. Generally includes element of regional flow. High potential productivity fracture flow with karstic element: Bh (f to k): High to moderate yields probable, however dependence on fracture flow makes poorer yields possible. Evidence of karstic flow. Generally includes element of regional flow. Moderate potential productivity fracture flow: Bm (f): High to moderate yields possible in places however dependence on fracture flow makes poorer yields possible. Potential element of regional flow, but local flow significant. Limited potential productivity fracture flow: Bl (f): Moderate yields unusual. Low yields more common. Regional flow limited. Mainly shallow, local flow. Poor potential productivity fracture flow: Bp (f): Small supplies may be possible but strata rarely exploited. Negligible regional flow. Limited local flow The classification is intended to represent general regional differences in resource potential and dominant groundwater flow mechanisms in bedrock units as mapped at 1:250 000 scale across Northern Ireland. The classification is not intended to identify, for bedrock at a specific site location, what the aquifer properties are or what the yield will be in a borehole drilled into the bedrock strata at that location. Due to natural geological variability and data availability, this map cannot and is not intended to represent actual conditions on a site specific scale. For site specific investigations more detailed geological and hydrogeological information is available from GSNI. A more detailed description of the aquifer classification methodology can be found in McConvey P J 2005. Water Framework Directive, An aquifer classification scheme for Northern Ireland, Geological Survey of Northern Ireland, Belfast. Commissioned Report pdf document. Advice on groundwater management and protection matters is available from the GSNI hydrogeologist or by contacting the Groundwater Team at NIEA. Further information on the hydrogeology of Northern Ireland is available in Hydrogeology of Northern Ireland, Robins N S (1997) and Hydrogeological Map of Northern Ireland, BGS 1994 both available from the BGS bookshop or from the GSNI office (note: the aquifer classification used on the 1994 hydrogeological published map differs from the classification shown on the GeoIndex layer). NOTE: When considering the distribution of aquifers within a certain area, reference should also be made to the superficials aquifer layer, available on this website.

Date (Creation): 2004

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13605502

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	gsni@economy-ni.gov.uk	Distributor
British Geological Survey	Enquiries	gsni@economy-ni.gov.uk	Point of contact
British Geological Survey	Enquiries	gsni@economy-ni.gov.uk	User

Maintenance and update frequency: Continual

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

Aquifers
UK Location (INSPIRE)
Hydrogeology
Geology

dataCentre

UK Location (INSPIRE)

Keywords

NERC_DDC

Access constraints: Other restrictions

Other constraints: license

Other constraints: Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright.

Other constraints: formal permission to do something. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright.

Use constraints: Other restrictions

Other constraints: 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: limitation not listed. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright.

Other constraints: formal permission to do something. Copyright acknowledgement required: Reproduced from the Geological Survey of Northern Ireland, with the permission of the Director.© Crown Copyright.

Spatial representation type: Grid

Denominator: 250000

Language: English

Topic category

Geoscientific information

Geographic identifier: NIR
ISO 3166_1 alpha-3 2009 revision

Geographic identifier: NORTHERN IRELAND [id=181000]
British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 creation

Begin date: 2004 After

Unique resource identifier: TM65 / Irish National Grid (EPSG::29900)

Distribution format

Name	Version

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	gsni@economy-ni.gov.uk	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://mapapps2.bgs.ac.uk/GSNI_Geoindex/home.html	GSNI GeoIndex

Hierarchy level: Dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: 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

Date (Publication): 2010-12-08

Explanation: See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Pass: No

Statement: This map layer shows the classification of bedrock, as mapped at 1:250 000 scale, into aquifer categories. This classification was initially undertaken to support groundwater assessments undertaken for the Water Framework Directive (2000/60/EC). The classification was produced on behalf of Northern Ireland Environment Agency (NIEA) (DoE, Northern Ireland) and is the standard classification currently used for assessing activities which may impact on groundwater resources. The classification comprises six categories of bedrock aquifer, based upon relative resource productivity and flow type.