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The term permeability refers to whether and how water can flow through a rock.
Permeability data is often used in studies of groundwater and in particular during investigations of pollution or aquifer contamination.
The BGS has prepared permeability information based on the 1:50 000 Digital Geological Map of Great Britain (BGS Geology).
The permeability indices are based on geological considerations and are as follows:
The permeability indices indicate the range of permeability likely to be encountered for each BGS Geology unit.
The maximum and minimum permeability indices are divided into five classes: very high, high, moderate, low, and very low permeability.
Contact Digital Data for more information.