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.