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Planning & Locational Guidelines

Locational Guidelines for the Authorisation of Marine Fish Farms in Scottish Waters: Category 1, 2 and 3 areas designated on the basis of Fisheries Research Services (FRS) predictive models to estimate environmental sensitivity of sea lochs.

The following tables and maps describe the Category 1, 2 and 3 areas for the Scottish Executive Locational Guidelines, designated on the basis of Marine Scotland Science predictive modelling to estimate nutrient enhancement and benthic impact in sea lochs or similar water bodies supporting aquaculture.

For a detailed explanation of how these categorisations were derived, refer to the Scottish Fisheries Research (now Marine Scotland Science) Report:

Predictive models were used to assign each sea loch an index of 'nutrient enhancement' and 'benthic impact'. The sum of these indices was used for the categorisation of areas as indicated below.

Combined 'nutrient enhancement' and

'benthic impact' indices


7 - 10


5 - 6


0 - 4


Maps / tables are updated quarterly