BGS Resistivity

BGS Datasets

Key information

Scale:
1:50 000
Coverage:
Great Britain
Availability:
Licensed
Format:
GIS line and polygon data. (ESRI, MapInfo, others available by request.)
Price:

£0.30 per km2 for commercial use. Subject to number of users, licence fee and data preparation fee.

Uses:
Local-level to Region-level use

Get data

Free access

Our free data is available under the Open Government Licence.  Please acknowledge reproduced BGS materials.

Sample data download
Supporting documents

This theme provides information on the electrical resistivity of a geological material, to be used where the earthing characteristics of the ground are required.

The spatial model covers England, Scotland and Wales at 1:50 000-scale using data from these BGS datasets:

The resistivity of geological units is an important factor in engineering activities where the electrical characteristics of the ground are required, e.g. in earthing of electrical systems. The resistivity of the ground is dependent on a number of factors, including pore water resistivity, saturation and the clay content of the underlying geology.

What is resistivity?

Electrical resistivity is an intrinsic property of a material and is measured as its resistance to current per unit length for a uniform cross-section. The national attribution of resistivity is based on the calculation of resistivity using the methodology published in An effective medium algorithm for calculating water saturations at any salinity or frequency (Berg (2007).

We hold several thousand field resistivity soundings but they cover a limited number of geological units and are unlikely to cover the lithological variation and saturation conditions that may be encountered. The Berg method uses a number of parameters that are known for the lithologies of many geological units (or can be reasonably estimated using knowledge of similar materials (from the datasets listed) and the field soundings results as a guide.

Who uses resistivity data?

Resistivity is of interest to a wide range of organisations concerned with development including:

  • infrastructure
  • utility companies
  • local authorities
  • green energy companies
  • developers
  • engineering consultants and contractors

Resistivity is particularly relevant to the major power distribution networks.

Classification

The Soil Parent Material Model of Great Britain, which describes the geology of the near surface, has been classified with modelled values of electrical resistivity. The description of the classification can be found in the free downloadable user guide.

Get in touch

For more information about our datasets, technologies and map viewers please contact us

You may also be interested in

BGS Geology 250k sample

Datasets

We have a wide range of licensed geoscience data. The datasets range from the geological data family (BGS Geology) to offshore data, ground stability datasets and 3D models.

Show more
Soil Parent Sample 1

Soil Parent Material Model

The Soil Parent Material Model details the distribution of properties of the weathered and unweathered soil parent materials of the UK.

Show more
National Geotechnical Database

National Geotechnical Properties Database

Relational database enabling interrogation of AGS 4.0 formatted geoenvironmental and geotechnical data taken from site investigations from the geological formations critical to UK engineering.

Show more

Was this page helpful?

  • How can we make this section better?*

  • Please select a reason*

  • How can we make this section better?*