This document summarizes a workshop on flood management in a transboundary context held in Zagreb, Croatia in December 2011. The workshop aimed to enhance practical capacity for integrated management of shared water bodies. Topics included the impacts of climate change on floods, balancing hydropower and flood control, and mechanisms for flood preparedness and mitigation in transboundary basins. Case studies and exercises were used to simulate transboundary cooperation on flood issues. The hypothetical case study for one exercise involved three countries sharing three rivers, with concerns over a planned dam upstream of a city and proposed reforestation in the watershed.