Compliance Assessment of Welsh River Special Areas of Conservation (SACs) Against Water Quality Targets Associated Data (2017-2019)
These data identify the compliance of Welsh river Special Areas of Conservation (SACs) regarding targets for seven water quality attributes: Dissolved Oxygen, Biochemical Oxygen Demand, Total Ammonia, Unionised Ammonia, Trophic Diatom Index, pH and Acid Neutralising Capacity. The targets and methods of assessment are set at a UK level by the Joint Nature Conservation Committee as published in the Common Standards Guidance for Rivers 2016, and form part of the conservation objectives for the riverine SAC features. There are nine SACs in Wales with riverine features (known in their respective Core Management Plans as):
• River Dee and Bala Lake
• Afon Gwyrfai a Llyn Cwellyn
• Coedydd Derw a Safleoedd Ystlumod Meirion (Afon Glaslyn)
• Afon Eden - Cors Goch Trawsfynydd • Afon Teifi
• Afonydd Cleddau
• Afon Tywi
• River Usk
• River Wye
For the purposes of water quality reporting, Natural Resources Wales (NRW) divides rivers into units called water bodies. A total of 119 (of a possible 127) water bodies, each with a single sampling point, were assessed for one or more attribute.
Water quality data collected by NRW’s routine surveillance monitoring programme for a three-year period (1st of January 2017 – 31st December 2019) were extracted from the NRW water quality database (KiWQM) to assess compliance with targets.
Data were not available for all attributes for all water bodies due to the risk-based design of NRW’s monitoring programmes. The majority of water bodies were assessed for more than one attribute. All data were subject to robust quality assurance processes. The data consists of two products: 1. An Excel spreadsheet summarising results and 2. GIS layers consisting of the WFD catchment area water bodies, clipped to the Welsh border and excluding water bodies not overlapping with river SAC boundaries.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS125707
- Metadata Language
- English
- Lineage
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Data extracted from NRW KiWQM database. Data collection and analysis methodologies undertaken in line with NRW’s standard guidance. All data were subject to robust quality assurance processes. Full methods are presented in the accompanying report.
- Additional Information
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Foster H., Jones T.G, Jâms, I.B., Hatton-Ellis T.W. 2024. Compliance Assessment of Welsh River SACs Against Water Quality Targets. NRW Evidence Report No: 729, 106pp, Natural Resources Wales, Bangor.
- Dataset Reference Date (Publication)
- 2024-01-11
Temporal Extent
- Begin date
- 2017-01-01
- End date
- 2019-12-12
- Topic category
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- Environment
Extent
Extent
- Geographic Extent
- Wales (WLS)
))
Distribution
Distribution
- Format Type and Description
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Database
(
)
- Specification
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[A] NRW Evidence Report in either Pdf or Word Format
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Database
(
)
- Resource Locator
- View and Download Data ( WWW:LINK-1.0-http--link )
- Resource Locator
- Web Mapping Service ( OGC:WMS )
Quality
Data quality
- Quality Scope
- Dataset
- Conformity
- Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Explanation
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This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
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Data extracted from NRW KiWQM database. Data collection and analysis methodologies undertaken in line with NRW’s standard guidance. All data were subject to robust quality assurance processes. Full methods are presented in the accompanying report.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- Water Quality Assessment
- Type
- Theme
Citation
- Date (Publication)
- 2025-01-08
Keywords
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IPSV Subjects List
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- Water quality
- Type
- Theme
Citation
- Date (Publication)
- 2020-11-18
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Attribution Statement
- Other constraints
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
Licence
- Other constraints
- Open Government Licence
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313235373037 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2025-03-05T15:46:24.646Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0