Multitechnique approach for characterizing the hydrogeology of aquifer systems: application to the Mauricie region of Québec, Canada

Abstract

The Groundwater Knowledge Acquisition Project (Programme d’acquisition de connaissances sur les eaux souterraines, PACES) in eastern Mauricie, Québec, aimed to develop multiple groundwater characterization methods and provided a more comprehensive portrait of this resource across the region. The proper management and protection of regional groundwater require an accurate characterization and detailed description of regional aquifers. Here, a comprehensive summary is presented, showcasing the amalgamation of specialized investigation tools and diverse groundwater characterization methods developed throughout the Eastern Mauricie PACES project. This holistic approach unveils valuable insights into hydrogeological units while identifying the crucial parameters that define the regional aquifers. Information related to groundwater surface or subsurface distribution is presented through comprehensive thematic maps, stratigraphic sections, 3D fence diagrams, novel geophysical techniques, conceptual models, and numerical modeling. Integrating a comprehensive spatially referenced database, targeted subregional studies, and peer-reviewed research has significantly enhanced our understanding of regional groundwater. This paper offers substantial information on regional aquifers and their surrounding geology. The approach developed during the eastern Maurice PACES project will serve to better manage and protect groundwater resources in Québec and elsewhere.