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Radioactive waste advisers
There is a requirement under European law for people who keep or use radioactive material, or who accumulate or dispose of radioactive waste, to appoint advisers, known as ‘radiation protection experts’ to advise them on radiological protection.
There is a requirement under European law for people who keep or use radioactive material, or who accumulate or dispose of radioactive waste, to appoint advisers, known as ‘radiation protection experts’ to advise them on radiological protection.
This content has moved to our BETA website. Visit our new Radioactive substances topics page or our EASR authorisations page....
Aquatic Classification
There are a number of significant environmental problems caused by a number of pressures, including diffuse and point source pollution, alterations to beds, banks and shores, alterations to water levels and flows and the presence of invasive non-native species. In order to measure these pressures and their potential effects, we use an aquatic classification system which covers rivers, lochs, estuaries, coastal and groundwater bodies. These are split into management units called water bodies, with a classification produced for each body (the number of water bodies between years varies slightly, as some water body boundaries are reviewed to ensure that they can be managed appropriately).
There are a number of significant environmental problems caused by a number of pressures, including diffuse and point source pollution, alterations to beds, banks and shores, alterations to water levels and flows and the presence of invasive non-native species.
In order to measure these pressures and their potential effects, we use an aquatic classification system which covers rivers, lochs, estuaries, coastal and groundwater bodies. These are split into management units called water bodies, with a classification produced for each body (the number of water bodies between years varies slightly, as some water body boundaries are reviewed to ensure that they can be managed appropriately).
We produce an annual Water Framework Directive (WFD) Classification for all the water bodies in Scotland.
Classification results for 2007 to the current year can be found on the Water Classification Hub.
Read the State of Scotland's Water Environment 2024 summary report (MS Word, 1.17 MB).
Most of our water environment is already in a good condition and subject to fewer pressures than most other E
Modelling
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
Technical guidance
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
Submit data
Air
Scottish Pollutant Release Inventory (SPRI)
Radioactive substances
Our radioactive substances data return forms were revised in March 2026.
EASR sealed source data return (Excel, 49 kB)
EASR radioactive waste data return(Excel, 80 kB)
EASR intention to transfer radioactive waste/contaminated items for the first time (MS Word, 202 kB)
Offshore data return (Excel, 59 kB)
Waste
Waste da
Reservoirs
The majority of dams will require an authorisation from SEPA under "The Water Environment (Controlled Activities)(Scotland) Regulations 2011 (CAR). This authorisation number will start CAR/.../... If you don't have a CAR authorisation for your dam, then you should contact your local SEPA team to discuss this.
You can find more advice on impoundments and water resources authorisations on our Enviro
Previous classification schemes
Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment.
Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment.
Before the introduction of the Water Framework Directive, SEPA had a number of classification schemes which we used to report the status of Scotland's water environment.
Classification schemes
Coastal water quality
Estuarine water quality
Loch water quality
River water quality
Water quality classification results
2006
2005
2004
2003
2002
2001
1996 - 2000 classifications
River classification
E
Strategic Environmental Assessment
Strategic Environmental Assessment (SEA) is a systematic process for identifying, reporting, proposing mitigation measures and monitoring environmental effects of plans, programmes and strategies. It aims to ensure that environmental issues are taken into account at every stage in the preparation, implementation, monitoring and review of plans, programmes and strategies of a public nature.
Strategic Environmental Assessment (SEA) is a systematic process for identifying, reporting, proposing mitigation measures and monitoring environmental effects of plans, programmes and strategies. It aims to ensure that environmental issues are taken into account at every stage in the preparation, implementation, monitoring and review of plans, programmes and strategies of a public nature.
Strategic Environmental Assessment (SEA) is a systematic process for identifying, reporting, proposing mitigation measures and monitoring environmental effects of plans, programmes and strategies. It aims to ensure that environmental issues are taken into account at every stage in the preparation, implementation, monitoring and review of plans, programmes and strategies of a public nature.
EU legi
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Strategic Environmental Assessment (SEA) is a systematic process for identifying, reporting, proposing mitigation measures and monitoring environmental effects of plans, programmes and strategies. It aims to ensure that environmental issues are taken into account at every stage in the preparation, implementation, monitoring and review of plans, programmes and strategies of a public nature.
Strategic Environmental Assessment (SEA) is a systematic process for identifying, reporting, proposing mitigation measures and monitoring environmental effects of plans, programmes and strategies. It aims to ensure that environmental issues are taken into account at every stage in the preparation, implementation, monitoring and review of plans, programmes and strategies of a public nature.
Disclaimer and terms and conditionsAll intellectual property rights are owned by SEPA or its licensors. The Controlled Reservoirs Register cannot be used for commercial purposes, by value added resellers or for income generating purpose. A full list of terms and conditions is available from the SEPA website or reservoirs@sepa.org.uk.
You may only use the Controlled Reservoirs Register for your own