<Tr> <Th> Settlements </Th> <Td> Milwaukee, Chicago, Cheboygan, Port Huron </Td> </Tr> <Tr> <Td_colspan="2"> Shore length is not a well - defined measure . </Td> </Tr> <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> The connection between Lake Michigan and Lake Huron through the Straits of Mackinac is 5 miles (8 km) wide and 120 feet (37 m) deep . This depth compares with the maximum depths of 750 feet (229 m) in Lake Huron and 923 feet (281 m) in Lake Michigan . Although the Straits create a pronounced bottleneck in the contours of the shoreline and a major constriction in the local bathymetry, defining two distinct basins, they are still deep and wide enough to allow the free exchange of water between the two sides . Because of the link through the Straits, Lakes Michigan and Huron have the same mean water level (in June 2015 it was 580 feet (177 m)). </P>

Where do lake huron and lake michigan meet