Nutrients Review 2023

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On the 1st April 2021, The Water Resources (Control of Agricultural Pollution) (Wales) Regulations 2021 came into force. The regulations revoke and replace the Nitrate Pollution Prevention (Wales) Regulations 2013. The objective of tthe new regulations is to reduce losses of pollutants from agriculture to the environment by setting rules for certain farming practices. With the implementation of the new Regulations, at WG’s request, NRW appointed consultants (Arup) to undertake a review of nutrients in water bodies across Wales to develop a national scale understanding of the current baseline nutrient water quality and assess potential nutrient risks. The nutrient review covers both nitrate and phosphate, which are considered to be the key nutrients contributing to poor water quality. The review has assessed the following water bodies in Wales: · Groundwater; · Surface water (rivers); · Lakes; and · Transitional and Coastal (TraC) waters. The methodology used in the review broadly followed the previous method used for the 2017 NVZ review (NRW_DS116240) but has been adapted to incorporate the assessment of phosphate. The methodologies represent a consistent and practical approach to idenfication of potentially polluted waters across Wales.

Identification

Dynodydd
Identifier
NRW_DS125601
Laith Metadata
Metadata Language
English
Lineage

The methods used in this review largely follows the 2016 NVZ methodology. We did this to allow the results to be compared with those previous assessment of waters polluted by nutrients from agricultural sources. There are differences and these include; · Phosphorous has been included in addition to Nitrogen. This gives a better understanding of the potential effects of nutrients in our waters as both are important in the nutrient cycle and both should be considered when looking at measures to reduce the nutrient inputs to our waters. · Modelling has combined both agricultural and urban land use while previous reviews used them individually (land use type and individual inputs can still be seen separately in the spatial layers on the dashboard). · More land use types have been used (previous reviews used a maximum 5 land types while this review uses 17). · The same apportionment has been used across all water types (different methods used previously). · Due to the anomalous nutrient results affecting some WQ data, orthophosphate and total oxidised nitrogen (TON) monitoring data from 2014 – 2016, that data has been excluded from this review.
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
 
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)

Bounding Box
Bounding Box

 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Geographic Information System ()

    Specification

    ESRI Feature Class

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
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 methods used in this review largely follows the 2016 NVZ methodology. We did this to allow the results to be compared with those previous assessment of waters polluted by nutrients from agricultural sources. There are differences and these include; · Phosphorous has been included in addition to Nitrogen. This gives a better understanding of the potential effects of nutrients in our waters as both are important in the nutrient cycle and both should be considered when looking at measures to reduce the nutrient inputs to our waters. · Modelling has combined both agricultural and urban land use while previous reviews used them individually (land use type and individual inputs can still be seen separately in the spatial layers on the dashboard). · More land use types have been used (previous reviews used a maximum 5 land types while this review uses 17). · The same apportionment has been used across all water types (different methods used previously). · Due to the anomalous nutrient results affecting some WQ data, orthophosphate and total oxidised nitrogen (TON) monitoring data from 2014 – 2016, that data has been excluded from this review.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

NRW Thesaurus
  • nitrates (nitrogen)
  • phosphates
  • nutrients
  • phosphorus
  • nutrient pollution
  • Nitrate directive
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

Restriction on this data have not been fully determined, however a preliminary assessment indicate part of this dataset is sensitive, and access may be restricted under relevant legislation. NRW may NOT release, publish or disseminate the sensitive data
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW NRW does NOT grant permission to third parties to re-use or disseminate the full dataset. Subject to a full assessment, a redacted version of the data may be re-used under provision and in line with the terms of a NRW licence.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313235363031 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-05-30T15:37:26.867Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

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

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