Ardaloedd Diogelu Tarddiad Dŵr Cyfunedig
Mae Ardaloedd Diogelu Tarddiad Dŵr [Cyfunedigl] wedi cael eu creu fel ffiniau ar gyfer y cyhoedd lle mae cyrff dŵr daear unigol mewn Ardaloedd Diogelu Tarddiad Dŵr wedi'u diddymu, felly dim ond y ffiniau allanol a ddangosir.
Mae Ardaloedd Diogelu Tarddiad Dŵr yn cael eu diffinio o amgylch safleoedd tynnu dŵr daear yfadwy mawr a chyhoeddus. Diben Ardaloedd Diogelu Tarddiad Dŵr yw rhoi amddiffyniad ychwanegol i ddiogelu ansawdd dŵr yfed trwy gyfyngu ar agosrwydd gweithgaredd a allai effeithio ar dynnu dŵr yfed.
Datganiad priodoli
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS116230
- Teitl Amgen
-
- Parthau Diogelu Tarddiad Dŵr Cyfunedig
- AfA029 Source Protection Zones [Merged]
- Laith Metadata
- English
- Datganiad
-
The following subdivisions are defined within SPZs:
- Zone 1: (Inner Protection Zone) - This zone is defined by a travel time of 50-days or less from any point within the zone at, or below, the water table. Additionally, the zone has as a minimum a 50-metre radius. It is based principally on biological decay criteria and is designed to protect against the transmission of toxic chemicals and water-borne disease.
- Zone 2: (Outer Protection Zone) - This zone is defined by the 400-day travel time from a point below the water table. Additionally this zone has a minimum radius of 250 or 500 metres, depending on the size of the abstraction. The travel time is derived from consideration of the minimum time required to provide delay, dilution and attenuation of slowly degrading pollutants.
- Zone 3: (Total catchment) - This zone is defined as the total area needed to support the abstraction or discharge from the protected groundwater source.
- A further Zone 4, or 'Zone of Special Interest' was previously defined for some groundwater sources. These zones highlighted areas (mainly on non-aquifers) where known local conditions meant that potentially polluting activities could impact on a groundwater source even though the area is outside the normal catchment of that source. In future this zone will be incorporated into one of the other zones (1, 2 or 3), whichever is appropriate in the particular case.
Large potable groundwater abstraction sites are georeferenced as Source Protection Locations. A groundwater flow model for relevant aquifer is run and classified into zones defined by travel time. Individual Source Protection Zones are merged and dissolved by Zone number stripping out SPZ name. This is for National Security reasons.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2026-05-14
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
(
Unknown
)
- Math
-
ArcMap
-
Geographic Information System
(
Unknown
)
- Lleolwr Adnoddau
- Download Data & Web Services ( WWW:LINK-1.0-http--link )
- Lleolwr Adnoddau
- Web Mapping Service ( 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 following subdivisions are defined within SPZs:
- Zone 1: (Inner Protection Zone) - This zone is defined by a travel time of 50-days or less from any point within the zone at, or below, the water table. Additionally, the zone has as a minimum a 50-metre radius. It is based principally on biological decay criteria and is designed to protect against the transmission of toxic chemicals and water-borne disease.
- Zone 2: (Outer Protection Zone) - This zone is defined by the 400-day travel time from a point below the water table. Additionally this zone has a minimum radius of 250 or 500 metres, depending on the size of the abstraction. The travel time is derived from consideration of the minimum time required to provide delay, dilution and attenuation of slowly degrading pollutants.
- Zone 3: (Total catchment) - This zone is defined as the total area needed to support the abstraction or discharge from the protected groundwater source.
- A further Zone 4, or 'Zone of Special Interest' was previously defined for some groundwater sources. These zones highlighted areas (mainly on non-aquifers) where known local conditions meant that potentially polluting activities could impact on a groundwater source even though the area is outside the normal catchment of that source. In future this zone will be incorporated into one of the other zones (1, 2 or 3), whichever is appropriate in the particular case.
Large potable groundwater abstraction sites are georeferenced as Source Protection Locations. A groundwater flow model for relevant aquifer is run and classified into zones defined by travel time. Individual Source Protection Zones are merged and dissolved by Zone number stripping out SPZ name. This is for National Security reasons.
Allweddeiriau
Allweddair
Allweddair
-
NRW Thesaurus
-
- groundwater
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-03-04
Allweddair
-
NRW SMNR Keywords
-
- Provisioning Services (SMNR)
- Regulating Services (SMNR)
- Cultural Services (SMNR)
- Hydrological Processes (SMNR)
- Water Resources (SMNR)
- Natural Resources (Incl. Features and Processes) (SMNR)
- Water Quality (SMNR)
- Ecosystem Services (SMNR)
- Sustainable Management of Natural Resources (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
-
© CNC/NRW. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Datganiad Priodoli
- Cyfyngiadau eraill
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313136323330 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-05-18T09:52:53.069Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0