Groundwater Vulnerability to Pollution T index map (Topography - Slope) in Catalonia according to DRASTIC
Slope distribution map expressed as an index value according to DRASTIC ranges from 1 to 10, being 10 the areas with lowest slopes (less than 2 %) and 1 the areas with highest ones (more than 18%).
Cartographic and Geological Institute of Catalonia (ICGC)
Montjuïc Parc.,
Barcelona,
08038,
Spain
email:
Georgina.Arno@icgc.cat
Role: author
Data Quality
Topography index map has been created from the Digital Terrain Model 15x15 m cell (ICGC). Spatial analysis and reclassification tools have been used to obtain the slope percentage and to turn into the “T” index values according to DRASTIC ranges.