testing WMS with a 32 Bit GeoTIFF

testing WMS with an 8 Bit GeoTIFF

Vulnerability assessment using DRASTIC (Aller et al., 1987) and COP methods

Vulnerability assessment using DRASTIC method (Aller et al., 1987)

Hydrogeological_map_GBR_2019

Vulnerability assessment using DRASTIC method (Aller et al., 1987)

C layer represents hydraulic conductivity of hydrological units and direct assignment of C index to each aquifer.

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 ‘S’-ratings due to soil and subsoil cover, with areas of little or no soil given a value of 10.

The Hydraulic conductivity layer is taken as a direct assignment of the hydraulic conductivities from the aquifer parameter database to the C index values according to DRASTIC, ranging from 1 to 10.

T layer represents topographical information, where calculation of the slope was effectuated and represented in rasterfile, reclassified into T index values.