Is Lake Huron and Lake Michigan the same lake? Why are Lake Huron and Michigan separate?

Lake Huron and Lake Michigan are joined together by a deep trench of water, with their water levels being equalized.

Lake Huron and Lake Michigan are thus regarded as two parts of the same lake.

Why are Lake Huron and Michigan separate?

Lake Huron and Lake Michigan are separate but are regarded as two parts of the same lake because of the small depth and width of the Straits of Mackinac.

About Lake Michigan – Huron?

Lake Michigan–Huron is the body of water made up of Lake Michigan and Lake Huron, connected by the open-water Straits of Mackinac, which is 295 feet (90 meters) deep and 5 miles (8.0 km) wide.

Huron and Michigan are regarded as one lake because the water flow through the straits maintains the general equilibrium of both water levels.

Although there is a general flow towards the east, but the water might move either way depending on the local environment.

Lake Michigan-Huron combined makes it the largest freshwater lake ever. When analyzed separately, Lake Michigan and Lake Huron is regarded as the largest of the Great Lakes.

However, the dimensions of the two lake basins has changed significantly since the last ice age.

What is currently Michigan-Huron had previously been divided into two or more lakes, and them sometimes, a portion of a single, deeper lake.