Quantification of groundwater flow in an alpine basin : Hydrogeological and numerical model for the Laubau area south of Ruhpolding | Quantifizierung der Grundwassersströmung in einem alpinen Talkessel : Hydrogeologisches und numerisches Modell für das Gebiet Laubau südlich von Ruhpolding
2020
Hanauer, Bernd | Möbus, Christoph
In the alpine basin of the Laubau, located south of Ruhpolding, a groundwater system connected to glacial gravels is characterized by groundwater level dynamics. Infiltration processes along streams which vary frequently in time and space, in combination with differentiated groundwater inflows from adjacent karstified and fractured hard rock, lead to frequent shifts in the groundwater level by more than 10 meters in the unconfined gravel aquifer. The hydrogeological context holds challenges for groundwater management and the design of water protection zones in this area. Accordingly, the hydrogeological-geohydraulic characteristics had to be carefully examined and quantified. The complex hydrogeological conceptual model is confirmed by a transient calibrated groundwater flow model that considers temporal and spatial variability of the infiltration rates of the streams as well as inflows from the adjacent hard rock.
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