<P> Lake Michigan -- Huron ( also Huron -- Michigan ) is the combined waters of Lake Michigan and Lake Huron , which are joined through the 5 - mile ( 8.0 km ) wide , 20 - fathom ( 120 ft ; 37 m ) deep , open - water Straits of Mackinac . Huron and Michigan are hydrologically a single lake because the flow of water through the straits keeps their water levels in near - equilibrium . ( Although the flow is generally eastward , the water moves in either direction depending on local conditions . ) Combined , Lake Michigan -- Huron is the largest fresh water lake by area in the world . If Lake Huron and Lake Michigan are considered two separate lakes , Lake Superior is larger than either . </P>
<P> Lake Michigan -- Huron ( also Huron -- Michigan ) is the combined waters of Lake Michigan and Lake Huron , which are joined through the 5 - mile ( 8.0 km ) wide , 20 - fathom ( 120 ft ; 37 m ) deep , open - water Straits of Mackinac . Huron and Michigan are hydrologically a single lake because the flow of water through the straits keeps their water levels in near - equilibrium . ( Although the flow is generally eastward , the water moves in either direction depending on local conditions . ) Combined , Lake Michigan -- Huron is the largest fresh water lake by area in the world . If Lake Huron and Lake Michigan are considered two separate lakes , Lake Superior is larger than either . </P>
where do lake huron and lake michigan meet
where do lake huron and lake michigan meet
Straits of Mackinac
Straits of Mackinac