Water , one of the most abundant compounds on earth, is special because all life-form on earth are totally water dependent. Water amounts up to 80% of our bodies and plays diverse chemical roles in humans as well as in flora, fauna, soil, and air. A huge portion of the world's population does not have access to a reliable supply of drinking water and the popullation of water resources is a skyrocketing global problems. Unplanned urban development has adverse impacts on natural resources of water . Lakes, which are in near vicinity of towns, get polluted due to neglect on the part of society and when tested, the resulted of B.O.D. as well as nitrates and phosphate content of the stores water show eutrophic conditions. This book is the compilation of selected papers out of the presented ones at the Natinal Seminar on Conservation of lakes and Water Resources: Managements Strategies, which was held during February 19-20, 2010 at College of Technology and Engineering, Udaipur (Rajasthan). The content of the book represents the current status of lakes and water resources in India including new research initiatives and overviews on their problems, control and management. About 107 papers were presented during the seminar. This book however comprises of selected 36 papers from renowed scientists working in various parts of the country and having ling working experience in their corresponding fields of expertise. All the papers were reviewed by two editor and then the selected were allowed to be included in this book. During the seminar scientists emphasized that the newly developed technologies should reach the farmers' field at the earliest.They showed concern on the increasing population, decreasing water table and drying of fresh water lakes. It was said that providing pure drinking water to mounting population on this earth will be a challenges to all the scientics working in this field.