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Eagle Island State Park - Idaho - was created in 1977.
Island Park Idaho averages about 6,250 feet on the plateau but the surrounding mountains are much higher.
The address of the Island Park Historical Society is: Po Box 224, Island Park, ID 83429-0224
It was minus 60 degrees F at Island Park Dam on 18 January 1943.
None. Actually, part of Yellowstone Park is in Idaho.