Detroit Island
In 1967 there were no taxable buildings erected on the island, but after one of the four landowners began subdividing and selling lots, seasonal residences were built. Six residences were developed by 1978. The Door County Board of Supervisors, the Town of Washington, and the Detroit Island Landowners' Association opposed plans by the state Department of Natural Resources to acquire the entire island for use as a park.
Grand Traverse Island State Park was founded in 1970 and protects slightly more than 5 acres (2.0 ha) of land on Detroit Island. It consists of five discontiguous parcels and there is no ferry access. 22.25 acres (9.00 ha) adjacent to two of the state park parcels are owned by the Door County Land Trust and are open to the public as part of the Detroit Harbor Nature Preserve.
The current purpose of the state park is to "maintain public access to provide opportunities for hunting, fishing, trapping, walking, wildlife watching and nature study and other compatible nature-based outdoor recreation activities." Deer, ruffed grouse, and waterfowl have been hunted on the island.
The state park includes areas mapped as "upland deciduous forest" and "open wetland/marsh".
148.65 acres (60.16 ha) on the southeast side is part of the Green Bay National Wildlife Refuge.
History
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 lead to a border dispute. In 1936, the U.S. Supreme Court decision Wisconsin v. Michigan found that Detroit and other nearby islands were part of Wisconsin.
Gallery
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Fishermen working with nets on Detroit Island; from a postcard postmarked in 1909
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Detroit Island, view of the Green Bay National Wildlife portion
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Another view of the Green Bay National Wildlife portion
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Northwestern and central Detroit Island
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Central and southeastern Detroit Island
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Detroit Island on October 8, 1952
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Ice stringers along the southeastern part of the island at 1:52:46 PM Central Standard Time on February 22, 2014. North is towards the left in this photo taken during Expedition 38 of the International Space Station