The US Dam Safety community has similar needs and activities to those of the European (EU) Dam Safety community. There has been an emphasis in the EU community on investigation of extreme flood processes and the uncertainties related to these processes. The purpose of this project was to cooperate with the organizations involved in these investigations over a three year period. The purpose of this cooperation was to: 1) coordinate US and EU efforts and collect information necessary to integrate data and knowledge with US activities and interests related to embankment overtopping and failure analysis, 2) Utilize the data obtained by both groups to improve embankment failure analysis methods, and 3) provide dissemination of these activities and their results to the US dam safety community. Dissemination was to be accomplished by: 1) Conducting a special workshop at a professional society meeting involving invited speakers from Europe and the United States. This session was held as a one day workshop at the Annual Conference of the Association of State Dam Safety Officials 2004 Dam Safety. The title of the day long workshop was; "Workshop on International Progress in Dam Breach Evaluation." Ten presentations were included in the workshop (see appendix for manuscripts). 2) A final report integrating EU and US research findings and results related to earthen embankment overtopping failure over the 3-year period would be developing and reporting in the form of a FEMA/USDA document. This report is included in the following pages.