The Big Bay Harbor of Refuge is located on Lake Superior one-half mile north of the town of Big Bay. The harbor development was the result of a statewide program to construct protective harbors around the Great Lakes so that no boater was more than 30 miles from a protective harbor. The harbor consists of a break wall, mooring bulkhead, boat launch, and a harbormaster's building.
The harbor has a 275 foot long sheet pile and concrete mooring bulkhead. The bulkhead has 10 slips for seasonal and transient boaters. Water and power are available at each slip. The west end of the bulkhead has fuel and sewage pumping, restrooms, and shower facilities available for slip renters. A boat launch and parking lot is open to day-use boaters.