Introduction / Help


The COMAH (Control of Major Accidents and Hazards) Land Information Search is a map based tool that allows you to search for data relating to any sensitive features/area/land located around your COMAH establishment for the purpose of identifying any possible sensitive receptors with respect to your identified credible major accident scenarios and Source-Pathway-Receptor linkages.
The COMAH Land Information Search tool enables you to define your area of interest by drawing a 10km radius circle on a map to represent your area of interest.
The search results will highlight the presence of a range of features such as Scheduled Monuments, Sites of Special Scientific Interest and Native Woodlands that fall within the area you have identified and within a 1km buffer.
Search results are delivered directly from the Scotland's Environment Web partners.
The COMAH Land Information Search has been designed as a search tool and is not intended to be a map browser. However it does enable the user to view individual results against their area of interest.

Draw your area of interest

1. Please Note! The button allowing you to draw only becomes available once you have zoomed the map into a scale of 1:64,000 or higher (the scale is found at the bottom right hand side of the map).
2. Draw an area on the map to represent where you are interested in searching. A 1000m buffer will automatically be created around your shape.
3. You can zoom in and out on the map whilst drawing your shape.
4. To delete a whole feature, hold down the ‘Control’ key and click inside the shape.
5. To measure a distance on the map click on the 'Measure' button. A measure dialogue box will appear. Select the measure icon and double click on the map to measure. Double click again to finish measuring.
6. To cancel a measurement and start again, click on the measure icon.
7. When you are happy with the search area you have defined, click the 'Run Search' button.
8. To view the search results on the map, select individual layers.
9. To see the full report click on ‘Show Full Report’. You can print and save it to PDF.
10. Rename and save a search area that you have drawn by selecting ‘Rename and Save Search Area’ within the full report. This feature enables you to reload previous searches should you need to do so.
11. To reload a previous search area, click on the ‘Saved Search Areas’ tab – individual searches are defined by a coloured banding and a date, time and name.
16. You can view each layer's map key by clicking on the ‘Legend’ tab.

Please send all comments and feedback to:

COMAH Land Information Search - Disclaimer

Scotland's Environment Web and its partners make no warranty as to the content, accuracy or completeness of the information contained within or derived from the COMAH Land Information Search.

Scotland's Environment Web and its partners shall not be liable for any losses or damages (including without limitation consequential loss or damage) whatsoever from the use of or reliance upon the information contained within or derived from the COMAH Land Information Search.

COMAH Land Information Search


Contains, or is based on, information supplied by SNH under OS Open Data Licence .

Contains Forestry Commission Scotland data – please refer to the Forestry Commission Scotland Data Download site

Contains Historic Scotland Data – please refer to the Historic Scotland Data Website

This application contains Scottish Environment Protection Agency information © The Scottish Environment Protection Agency. All rights reserved.
For conditions of use, please refer to SEWeb Legal Statement

Search Results

Results will appear here once a search has been completed


Currently Unavailable Layers

All COMAH Land Information Search layers are currently available for searching

Locally Stored Search Areas

Welcome to the Control of Major Accident Hazards (COMAH) Search

How to run a COMAH Land Information Search

i) You can either select to enter a place name, a post code (in the format EH12 7AT) or a grid reference (in the format NS123456) or…..

ii) You can go straight to the map and zoom into your area of interest using the tools provided. (Please note: You will need to zoom in on the map to a scale where the drawing tools become active before you can define your search area).


Search Name: