Drilling operations that reach so deep into the ground that they can affect the movement or nature of groundwater are called "earth outcrops." If you are planning such a geothermal outcrop for geothermal use with vertical geothermal probe, you must apply to the responsible water authority.

Each well provides data for the assessment of the subsurface at the respective location. The display enables the competent authorities to get an impression of the drilling project and the material produced on site. The authorities can carry out supplementary measurements and ensure the quality of the drilling results. This prevents costly wrong decisions in underground spatial planning.