Hydrogeology of the Laacher See area (East Eifel Volcanic Field)

Sven Philipp1, Achim Justen1, Karl-Heinz Köppen1, Michael Pirrung2, Thorsten Schäfer2
1 Wasser und Boden GmbH, Am Heidepark 6, 56154 Boppard-Buchholz
2 Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena

14.7 in Young Hydrogeologists Forum

Land usage in Germany is dominated by agriculture, forestry and settlements. This limited area is faced with different interests, needs and utilizations. In most cases, only the surface is taken into account, although the subsurface reveal important geological and hydrogeological processes, which influences the surface.

Especially, in the Laacher See area (East Eifel) different interests are faced with each other, for example groundwater exploitation for drinking water supply, mineral water and CO2-gas industry, as well as (volcanic) tourism, agriculture and quarrying.

To provide a basis and a tool for decision-making authorities and cooperating companies, it is crucial to develop a (conceptual) hydrogeological model of the area of the Laacher See. In particular, the open question of groundwater in- and outflow of the Laacher See itself and determination of reaction mechanisms (water-rock-interactions due to magmatic CO2, probably leading to high mineralized mineral waters) are further questions of this study.

Geological field mapping, borehole data, as well as geophysical and hydrochemical measurements and groundwater level registrations will be combined to develop a comprehensive and credible, hydrogeological (conceptual) model that helps to understand the Laacher See area much better and provides a guidance for a responsible and sustainable usage of the surface water and subsurface groundwater bodies.