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Island in Door County, Wisconsin
Plum Island
Plum IslandShow map of WisconsinPlum IslandShow map of the United States
Plum Island is an island in Lake Michigan in the southern part of the town of Washington in Door County, off the tip of the Door Peninsula in the U.S. state of Wisconsin. The uninhabited island has a land area of 1.179 square kilometres (0.455 sq mi) or 117.87 hectares (291.3 acres). Carp Lake is located on the northwestern side. During years when Lake Michigan's water levels are high, it is a lagoon of Lake Michigan, but it gets cut off as a separate lake during low-water years.
The border between Wisconsin and Michigan was originally defined as "the most usual ship channel" into Green Bay from Lake Michigan, but commercial routes existed both to the north and south of the island, which led to a border dispute. In 1936, the U.S. Supreme Court decision Wisconsin v. Michigan found that Plum and other nearby islands were part of Wisconsin.
Lifesaving station from Lake MichiganPlum Island Rear Range Light
A lighthouse was built on the island in 1848 and abandoned when it was decided to move it to nearby Pilot Island in 1858. The island was re-colonized in 1895–6, when both a lifesaving station on the northeast corner and a set of range lights on the western side were built. The lifesaving station operated from 1895 to 1991, before being moved to nearby Washington Island, while the range lights were automated in 1969 and remain an active aid to navigation.
Shipwreck
The wreck of the Grape Shot is 0.18 miles (0.29 km) northwest of the lifesaving station in 8 feet (2.4 m) of water. It sank in 1867 after being driven ashore in a gale while carrying a cargo of lumber.
Plum IslandShow map of Wisconsin
