This report highlights the successes of the GEF Small Grants Programme in the international waters focal area. Special emphasis has been placed on the global benefits provided by international waters management and adaptive management techniques. It offers a community- based approach in international waters management that generates not only global environmental benefits but also increases adaptive capacity for communities and ecological systems and building resilience to climate change. The publication provides a snapshot of successes pulled from the nearly 600 projects in the SGP international waters portfolio. This publication assesses the impact of climatic variability and change on various waterbody types including rivers, regional seas, lakes and inland seas. From the study of the portfolio, it is clear that international waters resource management approaches and tools that are environmentally sound and sustainable can also be utilised as adaptive management mechanisms with intended or unintended adaptation benefits demonstrated by case studies taken from a variety of geographical areas.