In Scugog, the Oak Ridges Moraine is a primary water source feeding the Nonquon River and other headwaters that drain into Lake Scugog. Stewarded by the Mississaugas of Scugog Island First Nation and the Scugog Lake Stewards, the ongoing decline in Lake Scugog’s health, including the collapse of the pickerel fishery, highlights a direct link between land-use decisions and downstream lake conditions. Key concerns include protecting headwaters and reducing agricultural runoff, as well as contaminants common in urban stormwater.