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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

Velocity Indicates the speed of flood water and the direction in which it is travelling within Potentially Vulnerable Areas (PVAs). Velocity direction is available only within the river flood maps. It is sampled at a 150m resolution therefore cannot be used to identify detailed flow pathways. The velocity displayed on the river flood map shows the general speed and direction of flood water over a

Our vision is for towns and cities to use nature-based, blue-green solutions to absorb and safely convey rainwater. This will: help strengthen their resilience to the intense downpours they face under climate change minimise the risk of polluting sewage spills by keeping rainwater out of sewers create fantastic places for people to live and work Urban wastewaters Over the past 20 years, SEPA has

Continuous water quality monitoring equipment was deployed in the inner Clyde estuary adjacent to Govan in 2011. Low dissolved oxygen concentrations are known to occur in the inner Clyde estuary at this location as a result of the decomposition of organic wastes from discharges and urban run off. Limited mixing between fresh water and more dense saltwater leads to large differences between the sal

The SEPA Marine National Environmental Monitoring Buoy Network provides real time, high frequency environmental data from strategic locations around the coast, as part of SEPA obligations to monitoring the marine environment. What is being monitored? Continuous monitoring equipment gathers dissolved oxygen, water temperature, salinity and chlorophyll-a data at regular intervals. The data is stored

Local authority requests Local authorities may require information and water pollution advice from SEPA when considering whether land is statutorily contaminated. Form A signposts the available information. Form B should be used, with reference to Form F, when seeking water pollution advice. Local authority contaminated land contacts Aberdeen City Aberdeenshire Angus Argyll and Bute Clackmannan

We're in the process of moving to our Beta website and information on applying for authorisations is now also available there in a new radioactive substances section. Use the back button in your browser to return to this page. Links to our forms and guidance will remain here for a period of time to support the transition.   Notifications If you wish to notify SEPA of certain lower risk r

Groundwater This type of flooding is caused by water rising up from underlying rocks or flowing from springs. Groundwater is generally a contributing factor to flooding rather than the primary source. This map shows you where groundwater could influence the duration and extent of flooding from other sources. It does not show where groundwater alone could cause flooding.

Floodplain Storage Shows areas where there is the potential for floodplain storage. This is where flood water may be stored and slowed by natural features of the land. This map will be used in the Flood Risk Management Planning process to select the most appropriate action to take to tackle flood risk and will not be used in isolation. Please refer to the SEPA website for more information on natur

Regulation of radioactive substances 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.org.uk/contact). 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 ca