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Marine aquaculture modelling Computer modelling is used as a guide to determining licensed discharge quantities of anti-parasitic chemicals and organic waste arising from marine fish-farm operations. The modelling tools promoted by SEPA provide robust predictions in most cases, requiring relatively little site-specific information. Nevertheless, the quality of the model outputs is dependent upon g

As Scotland’s environment protection agency, we work every day to protect and enhance Scotland's environment, helping communities and businesses thrive within the resources of our planet. We call this One Planet Prosperity. We are working directly with businesses that we regulate at the highest level to engage them in the One Planet Prosperity challenge that Scotland needs to meet to be successful

Information regarding the actions we are taking to protect and improve Scotland's water environment. Delivering the aims of RBMP requires partnership working with public bodies, industry and land managers to secure multiple benefits for the environment, economy and society. See Who’s involved in RBMP River basin planning is working to support Scotland's Environment Strategy aims to create a net zero, circular economy that reduces the global impact of our consumption. It is embedded in Our Approac

The regulation and legislation of radioactive substances (RSA) in Scotland. Environmental authorisations (Scotland) Regulations 2018 What are we able to do? We can now accept: Applications for an EASR18 authorisation (please contact SEPA). Online notifications EASR18 for orphan source or managed radioactive substances (only IAEA category 5 that: exceed 200 kBq; tritium sources exceeding 20 GBq; and electrodeposited source. Radioactive substances in IAEA category 4 and ab

Frequently asked questions Why is a sea lice framework needed? Populations of wild Atlantic salmon have been in serious decline in recent decades and are now at crisis point. The pattern of decline is repeated across the salmon’s North Atlantic range and is likely caused, at least in part, by the effect of climate change on the survival of salmon during their time at sea. To build resilience of Sc

Can I view the maps full screen?No. The maps can only be viewed within the set frame. Why has the background on the maps changed (2019)?Due to changes to the contract associated with the supply of the background mapping to SEPA, we now have a different background on display. This change took place in December 2018. There are no significant changes to what is displayed, and the mapping presented ha

Information regarding water bodies designated as protected areas. A significant number of the water bodies in Scotland are designated as protected areas. This is because of their importance for special purposes such as wildlife conservation, drinking water supply, shellfish harvesting or bathing. These designated areas are vital to ensure that the diverse ecosystems and cultural and economic benefits contained within them are safeguarded. Protected areas are als

Further technical guidance This page brings together a number of ancillary guidance documents and previous email bulletin information relating to modelling of marine fish-farms for CAR licence applications. Auxiliary biomass sampling transect In areas where the tidal residual current is weak, the auxiliary transect (site-specific sampling 2) may be aligned along a bearing reciprocal to the primary