Water management is one the world’s most pressing issues. Major regions and

subcontinents have serious problems of water shortage, flooding and pollution

that present serious risks to people and wetland ecosystems that provide

invaluable services. Technical solutions to water management are often difficult

to implement cost-effectively for many reasons, including the scale and inter-

jurisdictional complexity of water systems and their multiple uses, many of

which conflict, impeding cooperation and cost-sharing. In some cases, there is

also skewed interdependency, for example, where upstream jurisdictions

control the water on which downstream jurisdictions depend or undertake

major developments that have adverse downstream impacts.