Date (Publication)

2010-06-18

Citation identifier

CEH:EIDC: / 1364210594753

Citation identifier

https://catalogue.ceh.ac.uk/id/4f6dcead-fd4c-4ae5-83ac-25694c9daf9b

Point of contact

Organisation name	Individual name	Electronic mail address	Role
UK Centre for Ecology & Hydrology		enquiries@ceh.ac.uk	Point of contact
Centre for Ecology & Hydrology		enquiries@ceh.ac.uk	Originator
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Custodian
UK Centre for Ecology & Hydrology		enquiries@ceh.ac.uk	Owner

Maintenance and update frequency

Not planned

Maintenance note

Completed

GEMET - INSPIRE themes, version 1.0

• Elevation

GEMET - Concepts, version 4.1.3

• digital land model
• river

GeoNames

• United Kingdom
• Wales

Keywords

• Mapping
• Water quality
• Hydrology

• plynlimon

• severn

• hafren

• hore

• tanllwyth

• wye

• gwy

• cyff

• iago

• digital terrain model

• DTM

• digital elevation model

• DEM

• ground surface

• stream

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

Other restrictions

Other constraints

This resource is made available under the terms of the Open Government Licence

Use constraints

Other restrictions

Other constraints

© UK Centre for Ecology & Hydrology

Spatial representation type

Grid

Distance

15  urn:ogc:def:uom:EPSG::9001

Language

English

Character set

UTF8

Topic category

• Elevation

Begin date

1968-12-31

Unique resource identifier

OSGB 1936 / British National Grid

Distribution format

Name	Version
ASCII grid

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/sd/4f6dcead-fd4c-4ae5-83ac-25694c9daf9b.zip	Supporting documents

OnLine resource

Protocol	Linkage	Name
	https://data-package.ceh.ac.uk/data/4f6dcead-fd4c-4ae5-83ac-25694c9daf9b	Download the data

Hierarchy level

Dataset

Other

dataset

Statement

Plynlimon digital terrain model was derived from digitised elevation data. The elevation data had been digitised from scanned topographic maps (reference below). Once the elevation data was captured (spot heights and contour lines) a TIN was created which was then used to derived a hydrologically corrected, grid-based DTM. All the processing was done in ARCINFO however it was not documented therefore no further details can be provided. Topographic maps reference: Plynlimon Catchment Areas - Severn Catchment. Sheet No. 1. Scale 1:5000. Wallingford, Berkshire. Institute of Hydrology, Natural Environmental Research Council, 1968. Plynlimon Catchment Areas - Wye Catchment. Sheet No. 2. Scale 1:5000. Wallingford, Berkshire. Institute of Hydrology, Natural Environmental Research Council, 1968.

Metadata

File identifier

4f6dcead-fd4c-4ae5-83ac-25694c9daf9b XML

Metadata language

English

Character set

8859 Part 1

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-11-21T09:29:15

Metadata standard name

UK GEMINI

Metadata standard version

2.3

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS Environmental Information Data Centre		info@eidc.ac.uk	Point of contact