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Big Sister Island
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Little Sister Island
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Big Sister Island (left, foreground) and Little Sister Island (right, background)
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Shoal between the islands
The Sister Islands are two islands in Lake Michigan. They are located in the bay of Green Bay, in the town of Liberty Grove, Wisconsin.[2] At one point the islands were connected, but higher water levels have eroded the size of the islands. Combined, the area of the islands sits at 6 acres (2.4 ha).
Sister Islands Sister Islands | |
Geography | |
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Location | Green Bay, Lake Michigan |
Coordinates | 45°13′28″N 87°08′46″W / 45.2244317°N 87.1462240°W |
Area | 6 acres (2.4 ha) |
Highest elevation | 581 ft (177.1 m) |
Administration | |
State | Wisconsin |
County | Door County |
Town | Liberty Grove |
There are many species of birds that nest on the islands. In 1964 there were an estimated 1,350 to 1,650 breeding pairs of herring gulls on the islands.[3] Both islands are owned and operated by the Wisconsin Department of Natural Resources, and they are protected as the Sister Islands State Natural Area.[4]
The shipwreck Meridian lies in the water south of the islands.[5]
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