This book analyses water allocation law and policy in New Zealand and offers a comparative analysis with Australia. In New Zealand, it is generally accepted that water allocation law has failed to be adequately addressed and New Zealand is now faced with the problem of over-allocation in many catchments. In comparison, Australia has extensive experience in reforming its water law and policy over the last 20 years. This book provides a comparative and critical analysis of the lessons that New Zealand can learn from the Australian experience and offers guidance for the improvement of water allocation outcomes in New Zealand. Starting with the background of water allocation law and policy in New Zealand, the book traces the evolution of legal policies, including the 1967 Water and Soil Conservation Act and the 1991 Resource Management Act, and examines the role they have played in current water allocation issues. The book situates these findings within global challenges, such as the impact of climate change, and the global scarcity of and increasing demand for freshwater resources. This book will be of great interest to students and scholars researching water law and policy, natural resource management and environmental law more broadly. It will also be of use to policy makers and professionals involved in developing and implementing water allocation laws and policies.