Aquifer Designation Map (Bedrock Geology)
AQUIFER_TYP_BEDROCK
Aquifer_Typology_Bedrock
The Aquifer Designation Bedrock Geology* map shows aquifer designations for bedrock aquifers in England. *Bedrock geology (formerly known as 'solid' geology by BGS) is a term used for the main mass of rocks forming the Earth and present everywhere, whether exposed at the surface in outcrops or concealed beneath superficial deposits or water. Geology less than 1.8 million years in age are referred to as Superficial Deposits. The designations identify the potential of the geological strata to provide water that can be abstracted and have been defined through the assessment of the underlying geology. The designations are attributed directly to BGS 1:50K DiGMapGB-50 data. The aquifer designations are: - Principal Aquifers (previously called Major): geology that exhibit high permeability and/or provide a high level of water storage. They may support water supply and/or river base flow on a strategic scale; - Secondary Aquifers A: permeable strata capable of supporting water supplies at a local rather than strategic scale and in some cases forming an important source of base flow to rivers; - Secondary Aquifer B: predominantly lower permeability strata which may in part have the ability to store and yield limited amounts of groundwater by virtue of localised features such as fissures, thin permeable horizons and weathering; - Secondary Undifferentiated: In cases where it has not been possible to attribute either category A or B to a rock type; (Secondary aquifer terminology was previously called Minor) - Unproductive Strata: these are geological strata with low permeability that have negligible significance for water supply or river base flow. This record is for Approval for Access product AfA125. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved. Derived from 1:50k scale BGS Digital Data under Licence 2011/057 British Geological Survey. © NERC.
dataset
protocol: DSP:ESRI
name: Aquifer_Designation_Map_Bedrock_Geology_Download
description: Aquifer Designation Map Bedrock Geology Download
DSTR02291
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
geoscientificInformation
inlandWaters
NotOpen
aquifer
geology
permeability
publication
2008-06-13
groundwater
publication
2010-01-13
-6.236
2.072
55.816
49.943
http://data.ordnancesurvey.co.uk/doc/country/england
http://data.ordnancesurvey.co.uk/doc/country/wales
creation
2011-01-01
revision
2015-05-02
notPlanned
Five bedrock typology types have been defined by aggregating geology type defined by BGS 1:50K DiGMapGB-50 - Bedrock Geology Theme. Geometry has been defined from the BGS 1:50K DiGMapGB-50 data by dissolving objects to reflect aquifer designations.
Open format | Shapefile (SHP)
Not Applicable
<a href="https://www.gov.uk/government/publications/environment-agency-conditional-licence/environment-agency-conditional-licence"> Environment Agency Conditional Licence </a>
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Environment Agency
data.info@environment-agency.gov.uk
https://www.gov.uk/government/organisations/environment-agency
description: Environment Agency Website
pointOfContact
Environment Agency
data.info@environment-agency.gov.uk
pointOfContact
2019-03-18