The aquifer media layer is created by direct assignment of soil layer to S index values from 1-10. The majority of the pilot area (80 %) is covered by subsoils > 5 m thick, with further 10 % subsoils are > 3 m thick. The majority of the catchment is given the lower āSā-ratings due to soil and subsoil cover, with areas of little or no soil given a value of 10.
The Teagasc & GSI National Soil and Subsoil Map were reclassified as per DRASTIC methodology. It was created using ESRI ArcMap 10.5 and QGIS as a shapefile and converted into .tiff format