Water Framework Directive (WFD) River Waterbody Catchments Cycle 1
Dalgylchoedd Cyrff Dŵr Afonol y Gyfarwyddeb Fframwaith Dŵr – Cylchred 1
The 'WFD River Waterbody Catchments' are a polygon Shapefile dataset collated as defined for the implementation of the Water Framework Directive. Catchments are defined as an area of land from which all surface run-off flows through a series of streams, rivers and, possibly, lakes to a particular point in the water course such as a river confluence. Delineation of the river catchment boundaries primarily utilised the CEH Flow Grid hydrological model run with CEH Integrated Hydrological Digital Terrain Model (IHDTM) data so as to determine water drainage into river stretches. Upstream catchment size was calculated within an ESRI GIS environment using the extension Arc Hydro.
Mae 'Dalgylchoedd Cyrff Dŵr Afon y Gyfarwyddeb Fframwaith Dŵr' yn set ddata Shapefile polygon yw sydd wedi'i chasglu fel y diffiniwyd ar gyfer gweithredu'r Gyfarwyddeb Fframwaith Dŵr. Caiff dalgylchoedd eu diffinio fel darn o dir lle y mae'r holl dŵr ffo arwyneb yn llifo trwy gyfres o nentydd, afonydd ac, o bosibl, llynnoedd i bwynt penodol yn y cwrs dŵr, megis cydlifiad afon. Roedd ffiniau dalgylchoedd afonydd yn cael eu dynodi trwy ddefnyddio model hydrolegol Grid Llif CEH yn bennaf, ochr yn ochr â data Model Tir Digidol Hydrolegol Integredig CEH, er mwyn pennu faint o ddŵr oedd yn draenio i mewn i hydoedd afonydd. Cyfrifwyd maint y dalgylch i fyny'r afon o fewn amgylchedd GIS ESRI gan ddefnyddio'r estyniad Arc Hydro.
Datganiad priodoli
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Chronfa Ddata Hawl. Cedwir pob hawl. Rhai nodweddion o'r wybodaeth hon yn seiliedig ar ddata gofodol digidol a drwyddedwyd oddi wrth y Ganolfan Ecoleg a Hydroleg © NERC (CEH). Yn cynnwys data Arolwg Ordnans © Hawlfraint y Goron a hawl cronfa ddata 2015.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
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DynodyddIdentifier
- NRW_DS119133
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Teitl AmgenAlternative Title
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- river catchments.LYR
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Laith MetadataMetadata Language
- English
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Lineage
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Delineation of the river catchment boundaries primarily utilised the CEH Flow Grid hydrological model run with CEH Integrated Hydrological Digital Terrain Model (IHDTM) data so as to determine water drainage into river stretches. Upstream catchment size was calculated within an ESRI GIS environment using the extension Arc Hydro.
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Dyddiad cyfeirnod y set ddata (Cyhoeddiad)Dataset Reference Date (Publication)
- 2013-12-31
Extent
Extent
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HydGeographic Extent
- Wales (WLS)
))
Distribution
Dosbarthiad
Distribution
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Fformat - Math a DisgrifiadFormat Type and Description
-
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Geographic Information System
(
)
- Specification
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ESRI Format
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Geographic Information System
(
)
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Lleolwr AdnoddauResource Locator
- View and Download ( WWW:LINK-1.0-http--link )
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Lleolwr AdnoddauResource Locator
- Web Mapping Service ( OGC:WMS )
Quality
Ansawdd Data
Data quality
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Cwmpas AnsawddQuality Scope
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DatasetDataset
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CydymffurfiadConformity
- 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
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Lineage
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Delineation of the river catchment boundaries primarily utilised the CEH Flow Grid hydrological model run with CEH Integrated Hydrological Digital Terrain Model (IHDTM) data so as to determine water drainage into river stretches. Upstream catchment size was calculated within an ESRI GIS environment using the extension Arc Hydro.
Keywords
Allweddair
Keywords
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2008-06-01
Allweddair
Keywords
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NRW Thesaurus
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- Water Framework Directive (WFD)
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Gwybodaeth Cynnwys
Content Information
Proffil CNC
NRW Profile
Elfennau CNC
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
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Math o GyfyngiadRestriction type
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Other restrictionsOther restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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This data is jointly owned by NRW and CEH There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Use Constraints
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Cyfyngiadau DefnyddioUse constraints type
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Other restrictionsOther restrictions
- Other constraints
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© CNC/NRW. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Contains OS data © 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. Some features of this information are based on digital spatial data licensed from the Centre for Ecology & Hydrology © NERC (CEH). Contains OS data © Crown copyright and database right 2015.
Metadata
Metadata
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Dynodydd FfeilFile Identifier
- 4f4c4942-4343-5764-6473-313139313333 XML
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Laith MetadataMetadata Language
- English
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Math o adnoddResource type
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DatasetDataset
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Dyddiad MetadataMetadata Date
- 2025-02-04T10:16:46.701Z
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Enw Safonol MetadataMetadata Standard Name
- NRW
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Fersiwn MetadataMetadata Standard Version
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1.0