Plynlimon research catchments: digital terrain model
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© UK Centre for Ecology & Hydrology
Hydrologically corrected digital terrain model (DTM) of Plynlimon catchments. The DTM was derived from digitised elevation data from scanned topographic maps.
Publication date: 2010-06-18
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Format
ASCII grid
Spatial information
Study area
Spatial representation type
Raster
Spatial reference system
OSGB 1936 / British National Grid
Spatial resolution
15
Temporal information
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.
Licensing and constraints
This dataset is made available under the terms of the Open Government Licence 
© UK Centre for Ecology & Hydrology
Related
This dataset is included in the following collections
Correspondence/contact details
UK Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
OX10 8BB Wallingford
Oxfordshire
UNITED KINGDOM
enquiries@ceh.ac.uk
OX10 8BB Wallingford
Oxfordshire
UNITED KINGDOM
Other contacts
Rights holder
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
Additional metadata
Keywords
cyff , DEM , digital elevation model , digital land model , digital terrain model , DTM , Flood and Droughts Digital Research Infrastructure (FDRI) , ground surface , gwy , hafren , hore , Hydrology , iago , Mapping , plynlimon , river , severn , stream , tanllwyth , United Kingdom , Wales , Water quality , wye