The application of Geographic information system (GIS) in groundwater had gained momentum to an extent that its application is multi diverse. It a powerful set of tool for collection storing, retrieving, transforming and displaying spatial data for a purpose that benefits human community. This book is an attempt to integrate various aspects of application of GIS in the field of water research. The compilation of papers in this present book will help the readers to obtain an insight regarding the solution for hydrogeochemical problems using GIS as a tool for both rain and groundwater. GIS tool for soil suitability, planning and management of resource, distribution and analysis of various geochemical parameters has also brought to limelight. Applications of landuse/ landcover , morphometric analysis, buffer analysis and relation with geophysical technique has been brought out in an elegant manner, with a clear and simple style. These features make this book interesting and indispensable to the researchers and managers of the water resources in different parts of the world.

Modeling the fate of chemical constituents such as cations and anions, organic and inorganic ligands, etc., is essential to understand the long-term utility of groundwater for various purposes. The chemical modeling helps to describe the chemical characteristic of an aqueous system to solve a simultaneous set of equations, which explains the equilibrium reactions and mass balance on dissolved element for the output consists of theoretical distribution of aqueous species for dissolved elements. The book in total includes ten papers dealing with the instrumentation techniques for the analysis of various major, minor ions and trace elements and focuses on the geochemical modeling to get a prime idea about the different concepts adopted in modeling and the evolution of different geochemical models. The chapters cover the speciation of different ions, case studies by using inverse and forward modeling in different Indian scenarios, application of GIS and biogeochemical modeling to get a comprehensive overview of the applications of the geochemical models in water research.