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Disclaimer and Terms and Conditions All intellectual property rights are owned by SEPA or its licensors. The maps 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 flood maps or by contacting flooding@sepa.org.uk The maps are indicative and of a strategic nature. Whilst all reasonable effort

Depth Provides an indication of the potential depth of flood water. Even shallow floodwater can be dangerous and can impact you and your property. Areas where there is not currently sufficient information to show the depth of floodwater are coloured grey....

Our groundwater monitoring networks ensure that Scotland’s groundwater supplies are adequately protected. SEPA’s nitrate monitoring network aims to identify areas affected by nitrate pollution, or at risk of being affected, and to find out if any improvement actions taken to address nitrate problems are effective. To achieve these aims, SEPA currently monitors 270 groundwater sites across Scotland

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

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

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

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

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

Variations A permit holder can apply for a variation to change the conditions of their permit. Administrative variations An administrative variation is a change to permit conditions which does not require SEPA to undertake technical assessment, for example, changing the name of a chemical, lowering a discharge limit, changing an effective date. These changes do not increase the environmental risk

List of data published by SEPA. Links to access data itself or applications that show the data We publish a range of datasets related to the environment, and we are continually reviewing and adding to this list. Please use our online form to contact us if you cannot find the dataset you require. We have a Corrections policy for handling revisions and corrections to the statistical summaries we produce. Our User engagement policy specifies how we engage with users to ensure our statistics ar