Characterization of Quaternary gravel aquifers and their implementation in hydrogeological models

Aquifer analogues of Quaternary gravel deposits at two research sites in SW Germany were assembled. Detailed 2-D and 3-D sedimentological models were developed in the mesoscale (tens of metres) from sedimentological, hydrogeological, and geophysical surveys. Data from field investigations were integrated in facies models using Arclnfo GIS and GoCAD, respectively, delineating sedimentary structures and providing a database for hydraulic properties. A method was developed to convert these data into groundwater flow models using MODFLOW 2000 and related software. These were utilized to obtain bulk hydraulic flow and transport properties of the investigated sites.