One of the objectives of IIASA's study "The Future Environments for Europe: Some Implications of Alternative Development Paths" is to characterize the large-scale and long-term environmental transformations that could be associated with plausible scenarios of Europe's socio-economic development over the next century. Special attention is being given to a few low-probability, high-impact transformations. Changes in hydrological cycles and climatic factors are some of the key environmental components being considered. 

This Working Paper describes the present conditions of evapo-transpiration and runoff for Europe, as well as their future conditions as based on a scenario for climate change.