Parthau Perygl Nitradau
Roedd Parthau Perygl Nitradau (NVZs) yn ardaloedd yng Nghymru sy'n cynnwys dŵr wyneb neu ddŵr daear sy'n agored i lygredd nitradau o weithgareddau amaethyddol. Fe'u dynodwyd yn 2013 yn unol â gofynion Cyfarwyddeb Nitradau'r Comisiwn Ewropeaidd 91/676/EEC, a oedd â'r nod o ddiogelu ansawdd dŵr ledled Ewrop drwy atal nitradau o ffynonellau amaethyddol rhag llygru dyfroedd daear a dŵr wyneb a thrwy hyrwyddo'r defnydd o arferion ffermio da. Ym mis Ebrill 2021 cafodd y Parthau Perygl Nitradau dynodedig yng Nghymru eu dirymu yn sgil cyflwyno’r Rheoliadau Adnoddau Dŵr (Rheoli Llygredd Amaethyddol) (Cymru) gyda rhai mesurau'n cael eu gwneud yn gyfraith dros gyfnod o amser. Nid yw'r cyfnodau pontio yn berthnasol i'r ffermydd hynny sydd wedi'u lleoli mewn Parth Perygl Nitradau a ddynodwyd yn flaenorol lle mae'r holl fesurau o fewn Rheoliadau Adnoddau Dwr (Rheoli Llygredd Amaethyddol) yn berthnasol ar unwaith. Mae'r set ddata hon yn berthnasol nes bod pob mesur yn cael ei wneud yn gyfraith.
Datganiad priodoli
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl. Yn cynnwys data Arolwg Ordnans. Rhif Trwydded Arolwg Ordnans AC0000849444. Hawlfraint y Goron a Hawl Cronfa Ddata.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS116240
- Teitl Amgen
-
- AfA 169
- NVZ Nitrate Vulnerable Zones 2013.lyr
- NVZ Nitrate Vulnerable Zones 2010.lyr
- NVZ Nitrate Vulnerable Zones 2008.lyr
- Laith Metadata
- English
- Datganiad
-
The Nitrate Vulnerable Zone boundaries were delineated using a Geographical Information System. The first step was to look at the previous NVZ boundaries and compare them with ground water body data from BGS. This information was used to produce a first draft of the new boundaries, which were then clipped to field boundaries and put out to consultation. Following responses from the consultation, amendments were made to the boundaries which also considered estimated borehole catchments. Next, boundaries were re-adjusted to field boundaries and the mean high water spring tide mark (unless fields fell below the mean high water spring tide mark).
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2017-01-12
Ystod amser
- Dyddiad cychwyn
- 2008-01-01
- Dyddiad gorffen
- 2013-01-01
- Categori pwnc
-
- Inland waters
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
(
)
- Math
-
ESRI Feature Class
-
Geographic Information System
(
)
- Lleolwr Adnoddau
- View and Download ( WWW:LINK-1.0-http--link )
- Lleolwr Adnoddau
- Web Mapping Servicd ( OGC:WMS )
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
The Nitrate Vulnerable Zone boundaries were delineated using a Geographical Information System. The first step was to look at the previous NVZ boundaries and compare them with ground water body data from BGS. This information was used to produce a first draft of the new boundaries, which were then clipped to field boundaries and put out to consultation. Following responses from the consultation, amendments were made to the boundaries which also considered estimated borehole catchments. Next, boundaries were re-adjusted to field boundaries and the mean high water spring tide mark (unless fields fell below the mean high water spring tide mark).
Allweddeiriau
Allweddair
Allweddair
-
NRW Thesaurus
-
- nitrate sensitive areas
- nitrates (nitrogen)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
Allweddair
-
NRW SMNR Keywords
-
- Natural Resources (Incl. Features and Processes) (SMNR)
- Water Quality (SMNR)
- Provisioning Services (SMNR)
- Ecosystem Services (SMNR)
- Water Resources (SMNR)
- Minerals (SMNR)
- Hydrological Processes (SMNR)
- Regulating Services (SMNR)
- Soils (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Geodiversity (SMNR)
- Management Areas (SMNR)
- Cultural Services (SMNR)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-26
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
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: © CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right
Datganiad Priodoli
- Cyfyngiadau eraill
-
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.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313136323430 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-17T09:03:38.106Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0