Executive summary -- Introduction -- Climate change and the Great Lakes region. Air temperature ; Lake temperature and ice cover ; Precipitation ; Lake levels ; Water chemistry -- Adaptation projects and programs in the Great Lakes region. Adaptation projects and initiatives ; Capacity building ; Policy ; Natural resource management and conservation ; Infrastructure, planning, and development -- Regional challenges and opportunities -- Conclusion -- Appendices. A. Climate change adaptation literature ; B. State of adaptation methodology ; C. Adaptation case studies from the Great Lakes region (by strategy) ; D. Adaptation case studies compendium. The intent of this report is to provide a brief overview of key climate change impacts and a review of the prevalent work occurring on climate change adaptation in the Great Lakes region, especially focusing on activities in the natural and built environments as they relate to freshwater resources (and in some cases, at the freshwater/terrestrial interface). This report presents the results of EcoAdapt's efforts to survey, inventory, and, where possible, assess adaptation activities in the Great Lakes region.