According to the World Resources Institute (WRI) many, if not most of the world’s rivers are stressed. Determining a systems water stress is based upon measuring the ratio of total water withdrawals to the available renewable supplies within the catchment area. Rivers are an indispensible resource for our communities and ecosystems and we are hugely dependent upon them for agriculture, industry and our natural systems. A stressed river system can severely threaten regional water security and economic growth, and potentially contribute to political instability—especially in the absence of an adequate water-management plan.