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

testing WMS with a 32 Bit GeoTIFF

testing WMS with an 8 Bit GeoTIFF

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

T layer represents topographical information, where calculation of the slope was effectuated and represented in rasterfile, reclassified into T index values. The highest values correspond to low slope areas (alluvial aquifers) and the highest values correspond to steepest areas in mountains.

C layer represents hydraulic conductivity of hydrological units (from cp map Kennesey) and direct assignment of C index to each aquifer. Higher values of C correspond to alluvial aquifers, and smaller values to metamorphic and igneous rocks.

Precipitation, for Sarmatian aquifer in Dobrogea de Sud, Romania

R layer represents net recharge to groundwater, the mean net recharge in GROWA in the period 1981-2010. Values are reclassified values into D index values from 1 to 10. Lower values correspond to NE part of the area, where amount of precipitation is small.

O map in Slovenia represents one layer of vulnerability map COP in Slovenia that has been applied on the area covered by karstic rocks. The map is constituated from soil type classification, soil thickness, lithology and fracturation index and thickness of unsaturated zones. Vulnerability classes are: 1 Very High, 2 High, 2-4 Moderate, 4-8 Low, 8-15 Very low.

Topography/slope, for Sarmatian aquifer in Dobrogea de Sud, Romania