In October 2009, Nibinamik First Nation had a registered population of 440 people, of which only 28 were located in the Summer Beaver Settlement. The First Nation is a member of the Matawa First Nations, a regional Chiefs council, and Nishnawbe Aski Nation, a Tribal Political Organization representing majority of First Nations in Northern Ontario.
Summer Beaver began as an intentional community in 1975 when a group of Anglican people, related by kinship, decided to leave Lansdowne House, a Catholic settlement. Violence had reached epic proportions in Lansdowne House in the 1970s and the community was divided along religious lines. The Summer Beaver people felt that they could make a better life for themselves and their children back at Nibinamik Lake. The Canadian government was wary of this move, and offered nothing in the way of support for quite some time. Nibinamik was not recognized as a reserve until recently.