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A Groundwater Model for the Großmehring Flood Polder

The planned Großmehring flood polder is one of the sites on the Danube that were found to be particularly suitable by studies conducted for Bavaria’s flood protection action program 2020plus. It lies south of the Danube, opposite the municipality of Großmehring (district of Eichstätt) and upstream of the Vohburg barrage (district of Pfaffenhofen an der Ilm), and covers an area of about 430 ha. In total, approx. 13 million cubic meters of water can be retained in the flood polder during an extreme flood event. In order to ascertain and evaluate the impacts of polder flooding on the groundwater and on the surrounding uses (buildings, agriculture, etc.), a groundwater model whose extents define an area of approx. 132 km² was created for the regional planning procedure (ROV).

Our Services

  • Data acquisition, processing, and evaluation
  • Hydrogeological model (HGM)
  • Planning and supervision of reference date measurements (groundwater, surface water)
  • Development of numerical groundwater model
  • Steady-state and transient calibration of groundwater model
  • Coupling with 2D water-level model
  • Sensitivity analysis, covariance analysis
  • Simulation calculations for three polder variants
  • Optimization of measures, rough dimensioning of water management adaptation measures (e.g. drainage)
  • Groundwater monitoring (special monitoring network)
  • Public relations


Wasserwirtschaftsamt Ingolstadt