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Long-term river water quality indicator

SEPA publishes a long-term river water quality indicator, based on a network of sites covering 253 water bodies (rivers or sections of rivers). This indicator is based on a consistent set of five water quality parameters which are sensitive to organic pollution, nutrients and toxic substances, and which provide a measure of species diversity across approximately 10% of all water bodies.

SEPA publishes a long-term river water quality indicator, based on a network of sites covering 253 water bodies (rivers or sections of rivers). This indicator is based on a consistent set of five water quality parameters which are sensitive to organic pollution, nutrients and toxic substances, and which provide a measure of species diversity across approximately 10% of all water bodies. Monitoring In 2011, the Scottish Environment Protection Agency (SEPA) established an indicator of river water quality based on a network of sites covering 253 water bodies (rivers or sections of rivers), which account for approximately 10% of all water bodies. The indicator is based on a consistent set of five water quality parameters which are sensitive to organic pollution, nutrients and toxic s

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

Sea lice regulatory framework implementation

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

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

Help

Help information Can I view the register full screen?No. The register can only be viewed within the set frame. Can I hide the search menu on the right?No, the search menu on the right hand side is fixed. Why can’t I view my own property?The register is designed to support SEPA’s regulation of the reservoir industry and to support strategic level decision making. It is not suitable for assessing fl

Help Information

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

Velocity

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

River Basin Management Planning

An introduction to our river basin planning work.

An introduction to our river basin planning work. River basin management planning (RBMP) protects and improves Scotland’s water environment for the benefit of people, wildlife and the economy. Much of the water environment in Scotland is in good condition. However, there are still significant problems affecting water quality, physical condition, water resources, and the migration of wild fish. The River Basin Management Plans for Scotland set ou

Waste site information

Description of the type of data held about waste sites and why we collect it.

Description of the type of data held about waste sites and why we collect it. Scottish waste sites and capacity tool Information Reporting years Last updated Landfill sites and capacity (Annual) 2014 - 2024 January 2026 Waste sites and capacity (Annual) 2014 - 2024 January 2026 Site return data (Quarterly) Q1 2007 – Q4 2024 January 2026 Waste sites and capacity information This Scottish waste sites and capacity tool provides an annual summar

Actions to deliver RBMP

Information regarding the actions we are taking to protect and improve Scotland's water environment.

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

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