The book contains six major chapters. The chapter one on introduction deals with study area, materials and methods, results and discussion on climate, humidity, temperature, evapotranspiration, physiography, soil, vegetation, human impact, and geomorphology. The second chapter on the evolution of Islands explains briefly on the origin of Islands, types of coral reef/coral island etc. Various controlling factors on island hydrogeological behavior recharge of groundwater discussed in Chapter 3. The fourth chapter on the hydrogeology of Kavaratti and the major ion chemistry is the highlight of chapter five. The chapter 6 deals with the management of ground water resources.