Lake Charlevoix is a lake in Charlevoix County in the U.S. state of Michigan. It is the third largest lake in the state with a surface area of over 17,200 acres (70 km²) and 56 miles (90 km) of shoreline. The maximum depth in the main basin is 122 feet (37 m) and in the south arm, 58 feet (18 m).
The lake's largest tributaries are the Jordan River, feeding into the south arm at East Jordan, and the Boyne River, flowing into the main basin from the east at Boyne City. Other significant tributaries include Horton, Stover, Porter, and Loeb Creeks. The outflow of Lake Charlevoix is the short Round Lake/Pine River complex which discharges into Lake Michigan at Charlevoix. The lake's watershed covers 335 square miles (870 km2) in Charlevoix and Antrim Counties, and a small portion of the northwest corner of Otsego County.
Lake Charlevoix, in addition to most of the Great Lakes' species, holds walleye, northern pike, bass and bluegill. With trout and salmon migrating from Lake Michigan into Lake Charlevoix, the angler has an opportunity to fish for Great Lakes size trophies on calm, protected waters.
During the winter, Lake Charlevoix freezes solid to afford excellent ice-fishing opportunities.
The Lake Charlevoix Area Trout Tournament takes place the second weekend in June, offering thousands of dollars in prizes and a host of activities.
Fishermen are invited to clean their catch at the Ferry Avenue fish cleaning station, which was donated to the city by the Charlevoix Area Trout Tournament Inc. and is maintained by the city. The facility is in the parking lot, near the Lake Charlevoix boat launching ramp.