Field Monitoring, GIS, Remote Sensing, Geophysical Techniques, and Hydrochemical Analysis in Groundwater Investigations

This Reprint presents a high-quality, up-to-date collection of peer-reviewed studies that demonstrate the state of the art in integrated groundwater investigations. It reflects recent advances in combining field monitoring, geophysical techniques, remote sensing, geographic information systems, and hydrochemical analysis to achieve a comprehensive understanding of groundwater systems and their governing processes.

The contributions address critical challenges currently facing groundwater resources, including depletion, salinization, contamination, spatial variability of recharge, groundwater storage changes, and climate-related hydrological extremes. The studies cover diverse hydrogeological and climatic settings, such as arid and semi-arid regions, coastal aquifers, agricultural basins, post-mining environments, and humid landscapes. Together, they illustrate how interdisciplinary and multi-scale approaches can be used to characterize subsurface structure, assess groundwater quality, delineate recharge potential zones, monitor storage dynamics, and analyze groundwater-related flood processes. By integrating observational data, geophysical imaging, satellite-based information, spatial modeling, and data-driven techniques, this Reprint provides practical and methodological insights for researchers, practitioners, and policymakers. It supports evidence-based groundwater assessment and management strategies aligned with the Sustainable Development Goals.