 This study examined streamflow trends in 441 small catchments in 15 European countries over the period 1962 to 2004. It found that overall, streamflow trends were negative in southern and eastern regions, while they were generally positive in other areas. Additionally, it showed that the winter months had positive trends, while the summer months had negative trends. Furthermore, the study confirmed that these trends were consistent with projections from climate models. This article was authored by CaseDall, HSL, Jay Haniford, and others.