Plynlimon research catchments: digital terrain model

Hydrologically corrected digital terrain model (DTM) of Plynlimon catchments

Publication date: 2010-06-18

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Supporting documentation

Format of the dataset : ASCII grid

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

© Centre for Ecology & Hydrology (Natural Environment Research Council)

This dataset is part of the following

Where/When

Study area
Temporal extent
1968-12-31    to    …

Provenance & quality

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.

Correspondence/contact details

Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
OX10 8BB Wallingford
Oxfordshire
United Kingdom
enquiries@ceh.ac.uk

Other contacts

Custodian
Environmental Information Data Centre
eidc@ceh.ac.uk
Originator
Centre for Ecology & Hydrology
enquiries@ceh.ac.uk

Spatial

Spatial representation type
Raster
Spatial reference system
OSGB 1936 / British National Grid

Tags

Topic categories
Elevation
INSPIRE Theme
Elevation
Keywords
cyff,  DEM,  digital elevation model,  digital terrain model,  DTM,  ground surface,  gwy,  hafren,  hore,  hydrochemistry,  hydrology,  iago,  Mapping plynlimon,  river,  severn,  stream,  tanllwyth,  United Kingdom Wales water quality,  wye