While water levels in Georgian Bay fluctuate for a variety of reasons, the long-term trend (30 to 40 years) is that Lake Huron-Michigan water level averages will continue to decline largely in response to climate change, with probabilities of extreme lows and possibilities of short-term highs. Lowered water levels can strand and destroy areas of wetland. GBF wanted to know the impact to the relatively pristine wetlands of Georgian Bay that play such a critical role in its health. In 2014 and 2015, Georgian Bay Forever and the Great Lakes St. Lawrence Cities Initiative participated in collaborative work with the NASA-DEVELOP program and the Ontario Ministry of the Environment to map wetland change in the Georgian Bay area. You can find out all the details at this GBF link (Purpose, why we need to care about wetlands, results and future steps).