Measured electrical conductivity of the groundwater at a defined depth interval or for a single point in depth.

The geological profile depicted within a borehole log.

Lack of data available to analyse the chemical properties of the of groundwater.

factor C of DRASTIC groundwater vulnerability of Traun-Enns-Platte/AUSTRIA

Outline of a distinct volume of groundwater within an aquifer or system of aquifers, which is hydraulically isolated from nearby groundwater bodies and provides enough yield with suitable temperatures for open-loop systems (groundwater heat exchangers) with thermal storage at higher temperatures.

The ability of the ground to conduct heat within a given depth interval as an average value.

Any subsurface installations, which might lead to conflicts with drilling wells and borehole heat exchangers.

Uncontrolled landfill or major dumpsite with suspicion or recorded hazardous substances in substantial amounts

Specific thermal capacity per surface area unit for borehole heat exchangers of a defined length.

Hydraulic conductivity measures how easily a fluid can move through the voids in a material