Black Lake is located in Cheboygan and Presque Isle counties in Northern Michigan. With a surface area of 10,130 acres (41 km²), it is the seventh largest inland lake in Michigan. The largest body of water in the Black River watershed, it drains through the Lower Black and Cheboygan Rivers into Lake Huron. Black Lake is a summer destination for many families from the suburban Detroit area and from other nearby states as well as residents of the neighbouring town of Onaway.