BGS permeability

BGS permeability sample.

BGS permeability coverage.

Scale 1:50 000
Coverage Great Britain
Format GIS polygon data. (ESRI, MapInfo, others available by request)
Price 10p per km2. Subject to number of users, licence fee and data preparation fee.

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 predominant flow mechanism, either intergranular flow, fracture flow, or a mixture of intergranular and fracture flow
  • a maximum permeability index
  • a minimum permeability index

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.

Hutton field: well correlation diagram.