This paper assesses the impact of water supply variability on treaty cooperation between international bilateral river basin riparian states. Climate change is anticipated to change the variability of water supply, as well as its expected magnitude. Previous studies have focused mainly on water scarcity, measured in terms of mean precipitation or per capita water availability in the country, as a trigger for conflict or cooperation. The water variability measure used here captures both annual runoff variability and precipitation variability over periods of 30 and 100 years. The analysis used economic and international relations data to identify incentives for international cooperation in addressing water supply variability. The authors find that small-to-moderate increases in variability create an impetus for cooperation, although large increases in variability would reduce incentives for treaty cooperation. Stronger diplomatic and trade relations support cooperation, while uneven economic power inhibits cooperation. Various measures of democracy/governance suggest different impacts on cooperation across the basin riparians. The findings have policy implications in the context of preparedness for impacts of climate change on the water sector.

: In a world facing a growing water crisis, conflicts regarding water sharing and environmental issues are expected to grow, especially in transboundary river basins, where 40% of the world's population lives. This book represents one of the first attempts to bring together methodologies and analytical tools from socio-economic, international policy, engineering, and water management specialists dealing with transboundary water resources. This book will appeal to professionals involved in the various aspects of transboundary river basin co-operation, both on strategic and operational levels, but also to the academic community concerned with the study of transboundary river basin or water management. It will also be an important source for graduate students in (transboundary) river basin management.

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 book establishes a framework for defining transboundary water cooperation and a methodology for evaluating its effectiveness, which will contribute to more effective and therefore successful cooperation processes. With the increasing focus on transboundary cooperation as a part of the Sustainable Development Goal Framework, there is global recognition of transboundary water cooperation as a tool for improved governance and management of transboundary surface and groundwaters. However, there is not an agreed upon definition of transboundary water cooperation in the literature or in practice. This book develops the Four Frames of Transboundary Water Cooperation, which is a neutral modular framework for developing context-specific explanatory definitions of transboundary water cooperation in basins and aquifers. The Four Frames of Cooperation are legal, institutional, relational, and outcome. However, we need to move beyond defining cooperation to understand better measures of the quality and effectiveness of cooperative processes. The Weighted Model of Effective Cooperation presents a first step in qualitatively evaluating the effectiveness of transboundary water cooperation. This model defines effective transboundary water cooperation and operationalizes a method to evaluate the effectiveness of cooperative processes over internationally shared waters. Effective cooperation emphasizes the relational and outcome frames of cooperation while working towards equitability and sustainability. Together, the Four Frames of Cooperation and the Weighted Model of Effective Cooperation will improve the understanding of cooperation and encourage a detailed evaluation of the quality, success, and effectiveness of cooperative processes. This book will be of great interest to students and scholars of water resource management, water governance, and environmental politics. It will also appeal to policymakers and professionals working in the fields of water conflict, water diplomacy, and international cooperation.

Bridges over Water places the study of transboundary water conflicts, negotiation, and cooperation in the context of various disciplines, such as international relations, international law, international negotiations, and economics. It demonstrates their application, using various quantitative approaches, such as river basin modeling, quantitative negotiation theory, and game theory. Case-studies of particular transboundary river basins, lakes, and aquifers are also considered.This second edition updates the literature on international water and in-depth analyses on political developments and cooperation between riparian states. With an appended chapter on principles and practices of negotiation, and a new case study on the La Plata Basin, this edition is a timely update to the field of transboundary water studies.

China has forty major transboundary watercourses with neighbouring countries, and has frequently been accused of harming its downstream neighbours through its domestic water management policies, such as the construction of dams for hydropower. This book provides an understanding of water security in Asia by investigating how shared water resources affect China’s relationships with neighbouring countries in South, East, Southeast and Central Asia. Since China is an upstream state on most of its shared transboundary rivers, the country’s international water policy is at the core of Asia’s water security. These water disputes have had strong implications for China’s interstate relations, and also influenced its international water policy alongside domestic concerns over water resource management. This book investigates China’s policy responses to domestic water crises and examines China’s international water policy as well as its strategy in dealing with international cooperation. The authors describe the key elements of water diplomacy in Asia which demonstrate varying degrees of effectiveness of environmental agreements. It shows how China has established various institutional arrangements with neighbouring countries, primarily in the form of bilateral agreements over hydrological data exchange. Detailed case studies are included of the Mekong, Brahmaputra, Ili and Amur rivers.