All Wales Hydrological Analysis Stream Network
This layer was created to point to rasters used in NRW hydrological analysis tools. They are based upon the flow direction models which were created by the Environment Agency Detailed River Network which subsequently passed to NRW. The All Wales Hydrological Analysis Stream Network is based upon a threshold of the flow accumulation raster (NRW_DS123368)
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
-
DynodyddIdentifier
- NRW_DS123371
-
Laith MetadataMetadata Language
- English
-
Lineage
-
Created as a precursor to the Ordnance Survey Mastermap Water Network. There is a lot of subjectivity in terms to the thresholds used to generate these by-products from the flow direction raster.. It depends on intended use, spatial extent and scale. Changing these variables will alter the number and size of the resulting streams and catchments
Extent
Extent
-
HydGeographic Extent
- Wales (WLS)
))
Distribution
-
Fformat - Math a DisgrifiadFormat Type and Description
-
-
Geographic Information System
()
- Specification
-
ESRI Feature Class
-
Geographic Information System
()
Quality
Ansawdd Data
Data quality
-
Cwmpas AnsawddQuality Scope
-
DatasetDataset
-
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
- Degree
- false
-
Lineage
-
Created as a precursor to the Ordnance Survey Mastermap Water Network. There is a lot of subjectivity in terms to the thresholds used to generate these by-products from the flow direction raster.. It depends on intended use, spatial extent and scale. Changing these variables will alter the number and size of the resulting streams and catchments
Keywords
Allweddair
Keywords
-
NRW Thesaurus
-
- Hydrological Modelling
-
MathType
-
ThemeTheme
Dyfyniad
Citation
-
Dyddiad (Cyhoeddiad)Date (Publication)
- 2023-12-31
Allweddair
Keywords
-
Integrated Public Sector Vocabulary
-
- hydrology
-
MathType
-
ThemeTheme
Dyfyniad
Citation
-
Dyddiad (Adolygu)Date (Revision)
- 2013-04-03
Spatial Reference System
- Code
- NONE
Content
Gwybodaeth Cynnwys
Content Information
Proffil CNC
NRW Profile
Elfennau CNC
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
-
Math o GyfyngiadRestriction type
-
Other restrictionsOther restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
Access restrictions on this data have not been determined. It may contain sensitive information and therefore may be restricted under legislation. NRW may provide access to this dataset on request, however NRW may not release, publish or disseminate the data or derived products freely without further assessment.
Use Constraints
-
Cyfyngiadau DefnyddioUse constraints type
-
Other restrictionsOther restrictions
- Other constraints
-
© CNC/NRW Data may only be re-used externally under provision and in line with the terms of a NRW licence following an assessment of the data.
Metadata
Metadata
-
Dynodydd FfeilFile Identifier
- 4f4c4942-4343-5764-6473-313233333731 XML
-
Laith MetadataMetadata Language
- English
-
Math o adnoddResource type
-
DatasetDataset
-
Dyddiad MetadataMetadata Date
- 2024-05-30T09:12:17.255Z
-
Enw Safonol MetadataMetadata Standard Name
- NRW
-
Fersiwn MetadataMetadata Standard Version
-
1.0