Water resources in Mexico are threatened by scarcity, pollution and climate change. In two decades water consumption doubled, producing water stress in dry seasons and semi-arid and arid regions. Water stress rises due to physical and economic stress. In seven parts a multidisciplinary team analyzes hydrological processes in basins and their interaction with climate, soil and biota. Competing water use in agriculture, industry and domestic needs require savings, decontamination processes and desalination to satisfy the growing demand. Water quality affects health and ecosystems. This creates conflicts and cooperation that may be enhanced by public policy, institution building and social organization.

Introduction : the debate on climate change and water security -- Theory of scarcity-variability, conflict, and cooperation -- Emergence of cooperation under scarcity and variability -- Institutions and the stability of cooperative arrangements under scarcity and variability -- Incentives to cooperate : political and economic instruments -- Evidence-how do basin riparian countries cope with water scarcity and variability -- Conclusion and policy implications

This volume include over 30 chapters, written by experts from around the world. It examines drought and all of the fundamental principles relating to drought and water scarcity. It includes coverage of the causes of drought, occurences, preparations, drought vulnerability assessments, societal implications, and more.