Interactive Viewer - Terms and Condition of Use

The Coal Authority is pleased to provide access to this Interactive Viewer and related web services.

Content is not intended to amount to advice on which you should rely. You must obtain professional or specialist advice before taking, or refraining from, any action on the basis of the content on our site. Although we make reasonable efforts to update the information on our site, we make no representations, warranties or guarantees, whether express or implied, that the content on our site is accurate, complete or up to date.

Please read the following information regarding their use and the licensing of the information provided herein:

By remaining on this website and using the Coal Authority's Interactive Viewer and web services, you hereby acknowledge and agree to the Terms and Conditions of Use set out below.

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The Coal Authority provides information on the Interactive Viewer at two levels of resolution depending on your requirements. Whilst the Coal Authority holds several data sets in addition to those available through the Interactive Viewer, these have not been made available for reasons of data protection.

Planning Theme- Lower Resolution Data

The data available through the Lower Resolution Tab of the Interactive Viewer can be viewed at a scale of 1:25,000 or smaller and may be accessed and used free of charge, subject to the terms and conditions of Open Government Licence.

Coal Mining Theme - Higher Resolution Data

The data available through the Higher Resolution Tab of the Interactive Viewer can be viewed at a scale larger than 1:25,000. This information is provided pursuant to the Environmental Information Regulations 2004 ("EIR"), and subject to the exemptions therein. Open Government Licence terms do not apply to information accessible through the Higher Resolution Tab.

For the avoidance of doubt, EIR does not affect the intellectual property rights of the Coal Authority in the Interactive Viewer, including its copyright and data base right. In particular, the extraction or reproduction of information from the Higher Resolution Tab for a commercial search report (including for a "nothing found" report) will constitute a breach of the Coal Authority' s intellectual property rights and is not permitted without a licence from the Coal Authority.

Depending on your needs, Coal Mining Theme - Higher Resolution data can be provided by the Coal Authority as a specific report or, on request, under licence from us. For property conveyancing purposes, the Coal Authority draws your attention to the CON29M Coal and Brine Mining Search Report recommended by the Law Society of England and Wales, which contains additional property/site-specific information and advice.

  • The CON29M and other site-specific interpretive reports can be purchased from;

For more information on licensing Coal Mining Theme - Higher Resolution data sets from the Coal Authority, please contact us at:

Temperature Maps Theme

Temperature map layers present baseline spatial mapping of measured and estimated temperatures in Britain's coalfields. Depth intervals of 100m are shown up to a maximum depth of 1000m; the layers do not reflect water levels or the actual extent or presence of working at each interval. The temperature maps are joint copyright of British Geological Survey, UKRI and the Coal Authority. The raw data used to make the maps is held at the British Geological Survey and the Coal Authority and if requested may be chargeable.

Mine Water Bodies are used as a baseline map, to which temperature data are attributed. Two categories of data are presented; 

  1. Equilibrium temperatures which reflect the ambient temperature of the Mine Water Body and 
  2. Pumped Temperatures which reflect localised changes related to active pumping schemes. 

A detailed methodology can be found in this open access paper:

A detailed study is required to assess the extent and depth of workings as well as connectivity and temperature in a specific area. For more information contact the Coal Authority Mine Energy Team at

Interactive Map
Grey layers cannot be viewed at this scale
Click on a layer name for layer information Temperature maps are available to download
For a description of the methodology and data used
to make these maps, see this open access paper
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Reproduced with the permission of © The Coal Authority. All rights Reserved