In support of the 2011 Ministerial Conference, the European Environment Agency, supported by UNECE, has prepared a Europe's environment — An Assessment of Assessments (EE-AoA). This assessment of assessments focuses on the two themes of the Astana conference: water and related ecosystems, and green economy. What progress is being made? Is the right information available to be able to tell? Are the correct approaches to assess what is known being used to support the policy process? Given the volume of environmental reports, indicators and data available a huge amount seems to be known about these issues. But is all this informing the policy process effectively, and is the best being done with the resources available for assessment? The aim of this AoA is to investigate these issues by assessing the assessments: cataloguing what exists, reviewing what is in them and analysing how they are put together. The overall objective is to improve the way in which the state of Europe's environment is kept under on-going review.