Water Quality of Riverine Special Areas of Conservation (SACs) across Wales (2006-2012).

This data collection was required as part of the water quality assessment of various Special Areas of Conservation (SAC) for the monitoring round and report cycle 2006 to 2012. Water quality targets for designated riverine features are specified under the JNCC CSM Guidance. The targets are based on routine water quality monitoring and subsequent reporting. Water quality targets are assessed based on the chemistry, biology, phosphate, suspended solids and un-ionized ammonia. The dataset details the results of water quality target testing for the following rivers and associated SACs: - Afon Gwyrfai a Llyn Cwellyn SAC - Afon Eden and Cors Goch Trawsfynydd SAC - River Dee and Bala Lake / Afon Dyfrdwy a Llyn Tegid SAC - Afon Tywi / River Tywi SAC - Afon Teifi / Afon Teifi - Afonydd Cleddau SAC - River Usk SAC - River Wye SAC - Afon Glaslyn (Meirionnydd Oakwoods SAC)

Identification

Identifier
NRW_DS115830
Alternative Title
  • Water Quality Assessments for River Special Areas of Conservation: Second Habitats Directive Reporting Round (2006-2012)
  • Ansawdd dwr Ardaloedd Cadwraeth Arbennig (ACA) afonol ledled Cymru (2006-2012).
Metadata Language
English
Lineage

The water quality was tested based on EA General Quality Assessment (GQA) which has 4 classifications; chemistry, biology, nutrients and aesthetics. Each classification is made up of 6 grades from A (very good) to F (bad). The water quality targets can vary depending on the sensitivity of the species or habitat, and whether they are mandatory or discretionary targets. Chemistry Classification: based on dissolved oxygen, biochemical oxygen demand and ammonia. Sampling: occurred 12 times a year over 3 years Biology Classification: Based on macro-invertebrate communities. Sampling: Kick samples collected in spring and autumn, in one year out of every three. Phosphate Classification: Based on Soluble Reactive Phosphorus (SRP). Sampling: Monthly basis at chemical sampling points. Suspended Solids Classification: Based on the Freshwater Fish Directive. Sampling: Based on annual mean suspended solids. Uni-ionised ammonia Classification: Measured against the target for the river habitat as a 95-percentile. Acidity Acid sensitive units have been identified and assessed using a risk assessment based on various data sources including the Acid Water Indicator Community (AWICS) invertebrate monitoring tool, UK pH and ANC standards, and critical load exceedance maps.
Dataset Reference Date (Publication)
2013-03-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Environment Agency (EA)
Millbank Tower, 25th Floor, 21//24 Millbank, London, SW1P 4XL, England
http://www.environment-agency.gov.uk/
 

Extent

Extent

Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    [A] Report in .doc and .pdf format [B] Water quality results details of sampling location for all years .xls format

 

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
Degree
false
Lineage

The water quality was tested based on EA General Quality Assessment (GQA) which has 4 classifications; chemistry, biology, nutrients and aesthetics. Each classification is made up of 6 grades from A (very good) to F (bad). The water quality targets can vary depending on the sensitivity of the species or habitat, and whether they are mandatory or discretionary targets. Chemistry Classification: based on dissolved oxygen, biochemical oxygen demand and ammonia. Sampling: occurred 12 times a year over 3 years Biology Classification: Based on macro-invertebrate communities. Sampling: Kick samples collected in spring and autumn, in one year out of every three. Phosphate Classification: Based on Soluble Reactive Phosphorus (SRP). Sampling: Monthly basis at chemical sampling points. Suspended Solids Classification: Based on the Freshwater Fish Directive. Sampling: Based on annual mean suspended solids. Uni-ionised ammonia Classification: Measured against the target for the river habitat as a 95-percentile. Acidity Acid sensitive units have been identified and assessed using a risk assessment based on various data sources including the Acid Water Indicator Community (AWICS) invertebrate monitoring tool, UK pH and ANC standards, and critical load exceedance maps.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • river Gwyrfai (afon Gwyrfai)
  • River Wye (Afon Gwy)
  • Afon Eden
  • river Tywi (afon Tywi)
  • Afonydd Cleddau
  • River Usk
  • Special Areas of Conservation (SAC) - SAC monitoring
  • water quality monitoring
Type
Theme

Citation

Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Water quality assessments for river special areas of conservation : second habitats directive reporting round ( 2006 - 2012 )
 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313135383330 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2024-05-31T09:16:17.657Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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