The OECD (2009) report Managing Water for All: An OECD perspective on pricing and financing, recognises that the knowledge, science and monitoring of hydrology, environmental and water resource management linkages is less well developed than have been the advances in water policies. The continuation of this disconnect runs the risk that decision makers and other water system stakeholders are poorly informed and that policies are inadequately implemented and evaluated. These gaps in knowledge, science and monitoring are compounded as water resource management enter an era of uncertainty, greater variability and higher risks as a result of climate change, population pressures, increasing demand to meet environmental needs and other drivers.