Michigan has the longest freshwater coastline of any political subdivision in the world, being bounded by four of the five Great Lakes. Michigan is one of the leading U.S. states for recreational boating and contains more registered boaters than any other state in the country. The state has 64,980 inland lakes and ponds. A person in the state is never more than six miles from a natural water source or more than 85 miles from one of the a Great Lakes!
Michigan is the only state to consist of two peninsulas. The Upper Peninsula (often referred to as "the U.P.") is separated from the Lower Peninsula by the Straits of Mackinac, a five-mile channel that joins Lake Huron to Lake Michigan. The two peninsulas are connected by the Mackinac Bridge. It is sparsely populated but does offer several tourist destinations, camping facilities, and marinas. There are several marinas located in the Upper Peninsula and most regularly have available boat slips for those transient boaters that are looking to visit for the weekend. If your interest is long-term dockage during the summer, you're better off locating marinas in Northwest Michigan or marinas in Northeast Michigan.